I can't give you the sources of this data as I did not record where I got this and I have looked at a lot of online sources.
I have a Silas W Bowker born abt 1839 in Delaware Cnty NY, Died 10/25/1863 Folly Island, SC Parents Orsamus Bowker abt 1800 - 9/24/1877 Died in Walton, NY Sally Bogart abt 1809 - 2/1/1850 Died in Hancock, NY Four siblings, all girls Cynthia, Esther A, Sally A, Mary Ann.
Orsamus's parents were Daniel Bowker and Azubah Gregory Daniel 2/22/1767 - 5/1/1829. Born in Willington Twp, Tolland, CT Died in Hancock, Delaware, NY Azubah abt 1769 - 1/1/1813 Died in Hancock, Delaware, NY Daniel's parents were Silas Bowker Sr. and Esther Hobbs That Silas's father was John Bowker.
Does that tie in with your information?
Feel free to e-mail me if you want more of what I have.