Peter Drost, Loyalist
At the On-Line Institute for Advanced Loyalist Studies http://www.royalprovincial.com/military/musters/qarng/qarsaunders1.htmhttp://www.royalprovincial.com/military/musters/qarng/qarsaunders1.htm is the muster roll of Captain Saunders' Company Queens Rangers from 17 Dec 1779 to 23 Feb 1780.Peter Drost is on the list.
And at the Provincial Archives of New Brunswick website http://archives.gnb.ca/APPS/GovRecs/RS686http://archives.gnb.ca/APPS/GovRecs/RS686 in the Index to New Brunswick land grants is a 1785 land grant for Peter Drost in Parr Town, Sunbury.