I don’t know. I have no original sources for Hannah. I relied on Talcott’s William Chittenden of Guilford, Conn., and His Descendants (p.16). Talcott lists Hannah as unknown. Nathaniel (son of William, the immigrant) did have a daughter named Hannah, b. 1680. Find a Grave says that this Hannah was the first wife of William (son of Thomas), her first cousin. Find a Grave doesn’t provide any sources, nor does it show a photo of the tombstone which might provide some corroboration.