Meet Our International Team

For general enquiries about buying and selling at Christie’s, please contact Client Service at info@christies.com or by telephone at +44 (0)20 7839 9060 (London) or +1 212 636 2000 (New York).

For a complimentary valuation of your property, feel free to use our online Auction Estimates service or contact one of our Specialist Departments directly.

Senior Management Team - Americas

Bonnie Brennan

Sr. Vice President, Sr. Director Head of Trusts, Estates & Wealth Management Services

bbrennan@christies.com

+1 212 641 3629

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Bonnie Brennan is a Senior Vice President and Senior Director, Head of Trusts, Estates and Wealth Management Services in the Chairman’s Office of Christie’s Americas.  


Ms. Brennan joined Christie’s in 2012 with 15 years of experience in the auction business. She brings a history of successes in client development and strong relationships across the Trusts & Estates community. Since joining the Christie’s team, she has played a key role in securing notable consignments for Christie’s major sales of Impressionist and Modern Art, Post-War and Contemporary Art and American Paintings.


Prior to her current role, Ms. Brennan worked as a Senior Vice President, Business Development Officer for another major international auction house, where she specialized in the area of Trusts and Estates. She gained a solid reputation as a team player and had a long history of success in assisting professional fiduciaries and private clients with the disposition of personal property through both public auction and private sales. Ms. Brennan was also responsible for developing effective and compelling sale and marketing strategies for consignments at the highest levels.


Ms. Brennan is a graduate of Northwestern University in Evanston, Illinois, where she was a double-major in Art History and Communications.

Tash Perrin

Sr. Vice President, Sr. Director Chairman’s Office-Trusts, Estates & Wealth Management Services

tperrin@christies.com

+1 212 636 2058

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Tash Perrin was appointed Senior Vice President and Senior Director of Trusts, Estates & Wealth Management Services at Christie’s International in April 2013.  Ms. Perrin assists estate, institutional and private clients through major sales globally.  Prior to her current role, Ms. Perrin served as Head of the Estates, Appraisals & Valuations department and was responsible for overseeing the management of all the valuations produced by Christie’s Americas and managing the team in New York.  Ms Perrin served as Senior Vice President, Business Director of the department and has represented Christie's at trusts and estates/family office conferences across the United States since 2007.

In May 2007, Ms. Perrin re-joined Christie’s New York from London, when she was Head of Client Advisory services.  In this role Ms. Perrin led the department through major sales in London and also became instrumental in the organization of the first sales of Christie’s in Dubai.  Prior to moving to London, Ms. Perrin was active in several departments at Christie’s New York including Impressionist, 19th and 20th Century & Contemporary Art, Wine and the Old Masters Paintings department where she started her career in 1996.

Ms. Perrin qualified as an auctioneer in 1999 and has regularly taken sales for Christie’s New York and London. Ms. Perrin is also a highly sought after charity auctioneer, having conducted over sixty high profile charity auctions across the world and has raised over a million dollars for a range of causes.


Ms. Perrin holds a BA Hon degree in Art History from Queen's University, Kingston, Ontario, and is a graduate of Christie's Education Modern & Contemporary Art Course in New York.

Sarah Vandeweerdt

Senior Vice President, Head of Estates, Appraisals & Valuations

+1 212 636 2389

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Sarah Vandeweerdt was appointed the Head of Estates, Appraisals & Valuations in July 2013. In this role, Mrs. Vandeweerdt is responsible for overseeing the management of all the valuations produced by Christie’s Americas and managing the Estates, Appraisals & Valuations team in New York. In addition, Mrs. Vandeweerdt works in conjunction with the Business Director on department strategy, staff structures, training programs, financial proposals and business development initiatives. Prior to her 2013 appointment, Mrs. Vandeweerdt was Senior Vice President, Appraisals Director for the department.   

 

Sarah Vandeweerdt joined Christie’s in 2000 as a senior account manager in the Estates, Appraisals and Valuations department and was appointed a Senior Vice President in 2008. In this role, Mrs. Vandeweerdt assisted estate, institutional and private clients with Christie’s appraisal and consignment services as well as developed relationships with advisors and fiduciaries in the banking and legal community. Mrs. Vandeweerdt has been instrumental in the successful sale of several important collections at Christie’s including the 2008 single-owner sales of Impressionist, Modern and Post War Art from the Hillman Family Collection and the Estate of Alice Lawrence. She also facilitated a single-owner sale of fine and decorative art in 2007 from the Collection of Maria Felix, the acclaimed Mexican film actress. 


Mrs. Vandeweerdt has over eighteen years of experience in the auction world. She received a bachelor’s degree in art history at The Catholic University of America in Washington D.C. and a master’s degree in fine and decorative arts from the Sotheby’s Institute of Art in London.

Rita Boyle

Vice President, Chairman’s Office-Trusts, Estates & Wealth Management Services

rboyle@christies.com

+1 310 385 2654

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Rita Boyle joined Christie's in January of 2008. Ms. Boyle works from the Beverly Hills office and oversees business development with professional advisors in the Southern California area. Ms. Boyle assists these advisors in the legal, banking and financial communities through the disposition of art collections at auction as well as supervising the process of obtaining estate tax, gift tax, or insurance appraisals from Christie's to satisfy the fiduciary needs of trusts and estates.


Ms. Boyle has been instrumental in securing consignment of numerous important estates in Southern California most notably The Estate of Max Palevsky bringing $58 million at auction.


Prior to joining Christie's, Ms. Boyle worked in the auction field for 20 years in the role of an Asian Art specialist and in the field of Trusts and Estates. Ms. Boyle earned a BA degree in East Asian Studies form Duke University and studied Chinese History at the University of Nanjing in the People's Republic of China.

Senior Management Team - Europe

Mark Wrey

Valuation Director UK

Christie's King Street

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Mark Wrey began his career at Christie’s King Street in 1974 where he worked for 18 years in the Press, PR and Marketing departments, becoming Marketing Director in 1986. Highlights among his many exciting projects at this time were the amazing £10m Nanking Cargo Shipwreck Sale and the sale of Van Gogh’s Sunflowers, which was a landmark sale; this was the first picture to sell for more than £10m when it sold for £22.5m in 1987.


Mark then took responsibility in 1992 for Christie’s interests in the South of England. This involved looking after clients’ needs, providing valuations and selections for sale. The culmination of this period were the sales which he orchestrated from Cowdray Park, involving all specialist art departments as well as advice from the Valuations and Heritage & Taxation departments. This extensive project culminated in some exceptional sales.


Mark has been a Senior Director in the UK Chairman’s Office and has recently taken on a new role as Director of the UK Estates, Appraisals and Valuations department. He travels extensively throughout the UK and greatly enjoys the vast variety of objects, collections and clients that he encounters every week.

Grégoire Debuire

Directeur Département Inventaires

Christie's Paris

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Grégoire Debuire began his career in 1997 at Maître Rouillac, in Vendôme, and obtained his auctioneer's diploma the same year. During his career he has worked at Maître Loizillon, Maître Rémi Ader and at the auction house Mercier, in Lille, before joining Pierre Bergé and associates in Brussels.


Grégoire has always had a passion for art history and the art market, and holds a Master's degree in art history and public law regarding the preservation of historic buildings. He has published numerous articles on French architectural heritage, and in 2000 a book about small castles and manor houses in Pas-de-Calais.


Since 2006, he has managed the Valuations department at Pierre Bergé and associates in Brussels, while actively participating in the Paintings, Furniture and Works of Art and Asian Arts departments and organising a sale of Vintage, Modern and Contemporary photography.


Among the most striking items Grégoire has sold at auction are a rediscovered Marguerite Gérard painting, from the famous collection of cardinal Fesch, which sold for €241,500 in 2005, a rare statue N' Gombe, Congo, which was collected in 1906 and then rediscovered in a family collection in 2008 selling for €369,000, and a new study for Jacques Louis David's famous and historic picture 'Le serment du jeu de paume' which had previously belonged to the Baron Vivant-Denon. The owner was not aware of the artist and the historic importance of this work which sold for €193,050 in 2007.


Grégoire has always known how to share his passion for the arts and presented the French television programme 'Côté Maison' which shared extraordinary or curious objects with its viewers. Some of the great moments of the show were then reunited in his work 'Côté Collections' which showed 347 of the most unusual objects. In addition to this, he led a radio show on the art market on RTL.

London, King Street

Account Managers

Virginie Dulucq

Account Manager, Associate Director

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Virginie Dulucq joined the London Estates, Appraisals & Valuations Department in 2008, working on multi-category valuations and consignments with clients in the UK, Continental Europe and in the Middle East, and was promoted to Account Manager in 2010. She has managed complex valuations preparing for auctions such as the Harewood sale in 2012, which realized £3.9m. She became an Associate Director in 2013. Virginie has a degree in History and Art History from the Sorbonne University and has a Masters in Cultural Policies and Management from Sciences Po Paris.

Tom Legh

Account Manager, Associate Director

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Tom Legh joined Christie’s in 2008, moved to the Estates, Appraisals & Valuations Department in 2011 and became an Associate Director in 2013. He has managed complex valuations preparing for auctions such as Living with Art in 2012, which realised £32.8m, and focuses on assisting UK Heritage clients with conditional exemption claims, rental negotiations and other tax planning exercises. Tom has a Graduate Diploma in Law and an MA in History of Art and Architectural History from the University of Edinburgh.

Miriam Winson-Alio

Account Manager

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Miriam has been with Christie's since 2010 and first joined the Old Master Pictures Department. She graduated with a Bachelor's in Business Administration from the University of La Laguna in Spain and later acquired a Post-Graduate Diploma in Early European Art from Cambridge University as well as a Masters in Art History from the University of Glasgow / Christie's Education.
Rachel Reilly

Account Manager

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Rachel Reilly has a wide range of experience at Christie’s. She joined the firm in 2005 as an administrator in the Textile & Fashion department. In 2006 Rachel moved to the Popular Culture department, becoming a specialist in 2007. Her expertise covered Vintage Film Posters, Rock, Pop & Film memorabilia, and all Entertainment ephemera ranging from opera to modern celebrity. In 2009, Rachel became head of sale for Vintage Film Posters, and set many world auction records for movie posters during her tenure. She joined the Estates, Appraisals & Valuations team in King Street in 2012 as an Account Manager and focuses on organizing valuations from her native Ireland to all areas of the UK. Rachel holds an honours degree in Modern History from Trinity College, Dublin.

Julia Kiss

Account Manager

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Julia Kiss joined the London Estates, Appraisals & Valuations team in 2008, working predominantly on multi-category valuations for clients based in the UK and Continental Europe. Prior to this she worked closely with the Museums & Corporate Collections teams on business development. She was promoted to Account Manager in 2013 and now manages complex valuations for consignment as well as for taxation, government indemnity and insurance purposes. Julia holds a degree in History of Art from St Andrews University and a Master’s Degree in Historical Interiors and Decorative Arts from the Wallace Collection. 

General Valuers

David Llewellyn

Director

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David Llewellyn joined Christie's in 1976 and began his career in the Old Master and Modern Prints Department, of which he became Head of Department in 1985, the same year in which he coordinated the sale of Old Master Prints from Chatsworth, the most significant sale of its type to be held in the second half of the 20th Century, establishing new world auction records for Rembrandt, Durer and numerous other leading artist-printmakers. In 1993, David transferred to the Valuations Department where he is now one of the senior general valuers. Since 1993 David has been involved not only in many of the major European and International valuations done by Christie's since that time but also in some of the resulting, wide-ranging and multi-facetted sales. In 1995 he held primary responsibility for the cataloguing and conduct of the New York and London sales of the Collection of Rudolf Nureyev, in 2000 he oversaw the sale of Old Master Pictures, Islamic Glass and Renaissance-style Jewellery from the Collection of Baroness Batsheva de Rothschild, and in 2002 oversaw a private treaty sale of the Gary Player Collection of Medals, Trophies and Golfing Memorabilia.
William Lorimer

Director

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William J Lorimer joined Christies in September 1981 and worked in the furniture department till 1989, training under Sir Hugh Roberts, later Surveyor of The Royal Collections. Latterly he was in charge of the Continental Objects of Art, Furniture and Tapestry Sales in London and was instrumental in the rediscovery and sale of the Royal Bureau-plat made by Jean Henri Riesener for Madame Sophie de France, daughter of Louis XV, now at Versailles. He joined the Estates, Appraisals and Valuations Department in 1989 and since then has worked in most of the significant houses in the UK and many in Europe and has been involved closely with a number of key sales including the sale of property from the estate of HRH, The Prince Henry, Duke of Gloucester. He has had close links with Christies Education since 1985 and is a well respected and witty lecturer. William is a member of The Royal Company of Archers, HM The Queen's Bodyguard in Scotland.
David Monagle

Director

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Edward Monagle is a director of Christie's. He specializes in works of art, furniture, and sports memorabilia. His particular passion is golfing memorabilia, and he mounted the first Christie's auction of golfing memorabilia in America in 1995. Edward began his Christie's career in 1979 years ago in Glasgow, where he started on the ground floor as a salesroom porter. He transferred to the company's valuation department in London in 2001, and is one of the most experienced valuers in his field.
Piers Boothman

Director

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Piers Boothman joined Christie's in 2000 as a general valuer in the Valuations Department at South Kensington. He transferred to King Street Valuations in 2002, and was appointed Associate Director in 2005 and Director in 2009. With a primary focus on 20th Century Art following a specialist secondment to the Impressionist and Modern Art Department, Piers has been involved in many valuations for major UK and European modern and heritage art collections. Fluent in Italian, he has been an auctioneer since 2004.
Tjabel Klok

Director

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Tjabel Klok joined the Estates, Appraisals & Valuations department in London in 2011 as a General Valuer. Tjabel started his career at Christie's Amsterdam in 1994 as a Porter. He developed a broad interest in Art, resulting in a career change in 1998: he became Trainee in the Estates, Appraisals & Valuations department. In 1999, after he passed his exams to become an official Certified Valuer, Tjabel was promoted to General Valuer. He has been an essential Business Getter for many successfully sold collections and properties in Amsterdam and contributed to numerous important valuations across Europe.
Scott Macdonald

Associate Director

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Scott Macdonald joined Christie’s as a General Valuer and Associate Director in 2012, after nine years of experience in managing international valuation projects at a senior level. He has a degree in Fine Art Valuation from Southampton University and in Economics and Business from the University of Aberdeen.
Tancredi Massimo
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Tancredi Massimo di Roccasecca joined Christie's in 2009 in the Valuations Department in Christie’s Paris. In 2010 he transferred to King Street where he worked both in the Chairman’s Office and the UK House Sales and Collections department as a cataloguer. Having gained a range of experience within the company he returned to the UK Valuations team in 2012 as a Valuer with a primary focus on European Valuations. Fluent in both French and Italian Tancredi was educated at the Lycée français Charles de Gaulle and holds a Master’s degree from Trinity College, Dublin.
Peter Flory

Director

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Peter Flory started his career with Christie’s in 1980. After placements in many of the picture departments as a specialist, Peter went on to run the hugely successful Old Master Picture sales at South Kensington from 1990 to 2001, and whilst at South Kensington was also Head of Pictures overseeing the day to day running of all departments.  Peter  became an auctioneer in 1987, and was the principal auctioneer  for all picture sales at South Kensington. He has worked on numerous landmark sales and since joining the Estates, Appraisals and Valuations department  has brought his wide ranging knowledge and expertise to work on many large collections within the UK and Europe.  

Simon Reynolds

Associate Director

Italy

Account Managers

Paola Romagnoli

Account Manager

General Valuers

Laura Ventimiglia

General Valuer