From census records it would appear that you are correct. His parents are John R. Blake and Elizabeth. They have a son in their household in 1860 Alabama Shelby County age 1 born Alabama. He's there until 1880 when he's listed as 18. In 1900 he's still in Shelby County but married. Wife Lizzie born May 1871 Mississippi. kids Anna age7, Ulmer age 5 and Carl age 3. A Pearl Blake age 7 is shown as his niece. In 1910 he's in Jefferson County with Ulmer, Carl Obie and James in home. He doesn't show up in Bibb County until the 1920 census at which time his wife is Bettie age 55 born Alabama. James is still in home. Up until this census his wife has always been shown as born in Mississippi so he may have remarried or the earlier censuses were wrong.