Hi Chris,You'll be hard pressed to find descendants of William Henry Tuthill of Iowa formely of NY. now his son that you mention James William is number I there is a James the II and a James the III all can be found Familysearch.org I have never seen any other child listed for William Henry Tuthill. now here's something else you might not know Dorthea/Dorthy Platner was the second wife of William H. he married her in 1843, William H. first wife died in 1841 she married William in 1833 and she was born in 1813 her family came from Huntington L.I. NY, I found no child listed from this marriage but that dosen't mean there was none. I imagine you know the parents of William Henry and know that he had 5 brothers and one sister all born in Suffolk Co.NY.William H. joins up with my Line in that his Ancestor is a brother to Joshua 1690 a son of Chalker John Tuthill 1658.Don't be milead by my Tuttle I'm really a Tuthill my gggrandfather changed his spelling buts thats another story.Ken Tuttle of Quakertown PA.