Yes, they are cousins. They share the same grandparents, Andrew and Jemima Pember. Their children were Andrew Jr. Asahel, Ethan Allen, Ira,(unknown female),(unknown male),Augustan, and maybe others. Andrew Jr. had a son named James and Ethan Allen had a son named Hiram. there's more Pember info in the book. Hope this helps. Any questions my email is
wulfpack4@aol.com, Julie