Could not find you email but, I think it is possible that Samuel c. Seaman b 1 Nov 1756 in Poughkeepsie Dutchess Co. NY and d. 10 Nov 1811 is Rev. George W. Seaman Father.

All the Brothers and Sister are listed in Descendants of Capt. John Seaman, Hempstead, Long Island NY
www/familytreemaker.com/search.html
Samuel C. Seaman is person number 989

George W. Seaman is person number 1844 only thing listed under his name is died unknown.

I do not feel that this is my line now.
I have a Mary Seaman d/o Thomas Seaman and Lydia Schofield who married Abraham Slater and lived in the Cedar co. Iowa. I was thinking that other family members of the Seaman might also be related.
Hope this helps
Michael