Yes.His father was John Franklin Vassar and his mother Sarah Roach.His grandfather was Samuel Jenkins Vassar and grandmother Arabella Lisles.His great grandfather was John Harris Vassar and greatgrandmother Pricilla King.GG grandparents Samuel Harris Vassar and Mary Goosey. (look up Goosey on genforum.Peter Sr.) I have so much so you need to send my your address and I'll mail it. My e-mail firstname.lastname@example.org. My Peter Jackson Vassar Jr father was Peter Jackson brother of your John Harris Vassar.
My family were and some still are Reorganized Latter Day Saints.