Jan was born in 1761 and his baptism took place on April 10th, 1761 in Amsterdam (Oude Kerk).1 His godfather was Jan de Bruin and his godmother was Catrina Otterspoor.
M.1.1.1.1.1.1.5.5.7.2.1.4 : Jan Keller, van, was christened in Amsterdam the 10 April 1761. (Notes : Doop hervormd, Oude kerk, get. Jan de Bruin, Catrina van Otterspoor, 27p181 f94.)