Lot Essay
The arms are those of Gualtherus Kolff (1711-1789) and Alida Vosmaer (1712-1789). They married 7 September 1735 in Rotterdam. Sara Cornelia Kolff (1740-1802) was one of their three children. (Nederland's Patriciaat:/genealogieen van bekende geslachten, 's Gravenhage, 1995, p. 122-123)