Some additional info. Maybe we can get some help. 1786 tax Pitt Township Westmoreland Co PA lists a Benjamin Kiser There was also a Nicholas Kize on the 1786 tax list Allegheny was fromed from a part of Westmoreland 1790 census Benjamin Kiser 1-3-3 Pitt Township 1 over 163 under 163 females Could fitfor David and John, Benj b ca1792
1800 census Benj Kizer 0000100001 St Clair township John Kizer 1101041010Versailes township
1810 Nicholas Kizer10100 112 St Clair township Certainly enough here to keep digging.