I havent done much research on this Jacob Aker except for census records, I think it is very possible that catherine (Aker) Stall may have been a daughter to Jacob as she fits in the age group in his census records. I do know that Jacob Aker was in Pleasant Twp, before 1815 and then to Madison Twp from 1820-1840, also there was a Elizabeth Aker age 64 born in Virginia in the 1850 census of Madison Twp, could be Jacobs wife?. Do you have a death date and place for Catherine and if so have got a copy of her death certificate?. I have guessed that Jacob may have been the father of my John Aker who was born 1807 in Virginia.?