De Gijselaar was a civil servant (pensionary) in Gorinchem, from 26 May 1776 until 1779, and from 1779 until 11 October 1787 he was pensionary of Dordrecht.
De Gijselaar was a civil servant (pensionary) in Gorinchem May 1776 until 1779. This was from 26. He was pensionary of Dordrecht. This was until 11 October 1787. This was from 1779.