I am NOT related to these families; however have had occassion to research Ella/Elvenah WAITE Bristol (Mrs Frank H)and am happy to relate what I've found.
In the 1860 Fort Edward census you'll find Ella/Elvenah Waite @ 2yrs with her Mother, Eliza, who appears to be Widowed @ 32; Anna 11; Oscar 9; and Reuben A 7.
Anna Wait marries Lewis J Mosher and can be found in Greenwich;
Oscar marries and is widowed by the 1900 census, with sons Monroe and Stewart and Mother, Eliza living with him in Fort Edward;
Reuben A marries Addie Green, daughter of Anson Green who is living in Argyle in the 1880 and 1870 census.