I'm looking for a son of Daniel Schermerhorn b 1793 and this Daniel O may fit the bill. Daniel's unnamed son was b 1825 in Deerfield, Oneida Co NY. Is this a possibility? Census data from 1840, by which time I believe Daniel's wife Sallie had died, don't show any other young male in the household in Hammond, St Lawrence Co NY. So Willim does not fit. You are researching this through the Fosters. Is there any indication of Daniel's parentage through them?