This is a small update on Seneca & Rachel of Little Falls. It appears they had at least 11 children: James, John, Cornelia, Jane, Frank, George, Harrison, Edward, Margaret, Irving, Elizabeth.
It is unclear what ever happened to Seneca much after 1880. However, Rachel appears as a resident of Little Falls NJ on the 1910, 1920, and 1930 census'. In 1910 she was 63 and recorded as widowed.In 1930 she was 81 and living with daughter Elizabeth & her husband Orrie.
I would appreciate it if anyone could further confirm this information.Rachel & Seneca's youngest son Irving - was a railroader - and my grandfather.