From reviewing census records, it appears that your James O Earwood was a son of James A Earwood & his 1st wife Sarah (Babb?).And James A was a son of Andrew J Earwood & Sarah ______?
1850 Cobb Co GA census Carwood, Andrew J 37 (Carwood=Earwood) , Sarah 35 , William 13 , Tilman 11 , Andrew J 10 , Martha 9 , Fances 8 , Thomas 7 , George 5 , JAMES 4********* , John 1
1870 Paulding Co GA census p.406 Yearwood, James 24 GA , Sarah 30 GA , Adrian 2 GA (male) , William 12 GA , John 9 GA
Note Paulding Co marriages show that "H L Yearwood md Sarah A Babb 7 Feb 1867".I may be completely wrong but I suspect that this is James & Sarah's marriage record-I don't know how you get "H L" from James though.Also note that William & John are too old to be James's children.I wonder if they might be Sarah's children from a previous marrriage??
1880 St Clair Co AL census p.96b Yearwood, James 36 GA , Sarah 42 Ga , Adah 13 GA , JAMES 7 GA********* , Thomas 4 GA , Mollie 1 AL
Buried at Crossroads Baptist Church in Paulding Co GA is: Sarah Earwood b.15 May 1841-d.15 May 1886 I strongly suspect that this is James Earwood's FIRST wife Sarah.
1900 Gordon Co Ga census ED 51 P.11 Earwood, James A Aug 1843 GA , Mary L Sep 1857 GA (md 11 years) , Luna E Sep 1889 , Ramond O Mar 1891 , Annie M Apr 1893
1900 Gordon Co GA census ED 57 P.15 Earwood, James O Aug 1873 GA , Margarett Jul 1874 , George F Mar 1890 , Roy L Aug 1895 , Kate B Aug 1897 , Magie O Jan 1900*****
1900 Gordon Co GA census ED 53 P.6 Earwood, Thomas Dec 1876 boarder with HEnry A & Sarah E Clark
1900 Gordon Co GA census ED 57 p.16 Anderson, William 1833 Anderson, Margaret 1842 EARWOOD, Mary E May 1871 (md.3 yrs; 3 living children) Albright, Gertrude Sep 1894 Earwood, Iler I/J Aug 1897 Earwood, William L Nov 1898