This is a Message Board Post that is gatewayed to this mailing list. Classification: Query Message Board URL: http://boards.ancestry.com/mbexec/msg/an/UW.2ADI/2007.2 Message Board Post: Kris wrote, "My great grandfather was John Daniel O'Brien, bn. December 30, 1897 in San Mateo County. His mother's first name was Mary, bn. California in 1875. We don't know her last name for sure, it could have been Burk(e) or it could have been Gysenberg (as is listed on his death certificate, however, I cannot find anyone with this name on census records during this time, and there are many possible spellings.) His father was also John Daniel O'Brien. bn. CA in 1874" Kris, have you seen the John O'Brien's b. circa 1898, listed with an O'Brien-Geyenberger [sp?] household in the 1900 census (Township 2, San Mateo County, CA)? The relationship of John to the head of household is probably incorrect, as he is listed as "son"--this probably was intended to indicate his relationship to Mary O'Brien, who is listed directly above him. Note that Ellen O'BRIEN is listed as having had no children. Also note that the ages of Mary O'Brien and Ellen GEYENBERGER [sp?] accommodate the theory that Ellen G could be Mary O'Brien's mother. BURK, James, head, April 1840, 60, married 30 years, IRE --Ellen, wife, May 1855, 45, married 30 years, bore NO children, IRE GEYENBERGER, Ellen, boarder, Mar 1855, 45, widowed, IRE OBRIEN, Mary, boarder, May 1875, 25, married 4 years, bore 1 child/1 living, CA --John, son, Dec 1898, 2, single, CA Please post what you find when you receive John's birth certificate.