I may have a link to this family also. Found an Amanda F Gibson living with my William and Charlotte Gibson, Ashford, Cattaraugus NY, in 1855. They had no daughter Amanda. She did not appear before or after that. I know there is Native American on my Grandfathers side but am at dead ends with that. In one tree it shows Electa (bay ah say ah quay, daughter of Chief Blackhawk, had a brother William Blackhawk. My William is a mystery. Claimed to be born in VT, but after 8 years of searching, no record exists. He just appeared in 1835 in NY. Could he have adopted the surname Gibson, where Electa married a Gibson? Trying to solve my puzzle.