John Isgrig - Pedigree | FamilyCentral
 15 Apr 1764 - Aft 1820
 13 Sep 1721 - Nov 1788
 13 Apr 1716 - Bef May 1780
 Abt 1700 - 1740
 Abt 1700 - 13 Nov 1742
 Abt 1680 - 1755
 1668/71 - Abt 1750