All the following info was sent to me by Sherron Westerfield (sherronw@searnet.com).
He had 4 children. Martienes, Elizabeth (b. 11 Dec 1774, bapt. 11 Jan
1775) and Peter (b. 9 Jun, bapt. 27 Jul 1777) were baptized at
Conewego Colony, PA. There may have been a 5th child, Anatie, b. 9 Dec
1776. However, she is not recorded in Willempte's Bible, so if she
were their daughter she may have died in infancy.
see Orphans Court Docket: D, 213. 24 Apr 1781 (same date the account
of his estate was file). Williampe Voorhees, late Williampe Cosine,
late widow and relict of Peter Cosine, deceased, and Abraham Voorhees,
Cornelius Cosine, and Simon Vanarsdal, executors of the last will and
testament of Peter Cosine, show a balance in their hands of 8,340
pounds, 3 shillings, 7 pence. Confirmed.
Ibid. eodem die. Williampe Voorhees, late Williampe Cosine, late widow
and relict of Peter Cosine, deceased, asks that a guardian be
appointed for Cornelius Cosine, Martin, Elizabeth, and Peter, the four
minor children of said Peter Cosine. Court appoints James Brinkerhoff,
of Mountpleasant township.