The coat-of-arms are those of Bartlett quartering Coutts and Burdett with Coutts quartering Burdett in pretence with baroness' coronet for William Lehman Ashmead Bartlet-Burdett-Coutts (1851-1922) and his wife Angela Georgina, Baroness Burdett-Coutts (1814-1906). The lozenge of arms are those of Coutts quartering Burdett for Angela Georgina, Baroness Burdett-Coutts (1814-1906).
Angela Georgina Burdett-Coutts was the grand-daughter of Thomas Coutts (1735-1822), founder and, in 1778, sole partner of the London banking firm Coutts & Co., and his first wife Susan Starkie (d. 1815). She used her wealth to amass a large art collection and to fund numerous philanthropic schemes for which she was created a Baroness by Queen Victoria in 1871. She died on December 30, 1906 and was buried in Westminster Abbey on January 5, 1907.