This is not my line,but I think I can help. Jefferson was born in South Carolina in May 1862 to John Harris Abercrombie and Mahala McMahan. He married Fannie V. Sammons in 1886. I can't tell you where he died he was living in Atlanta, Georgia in 1910. He had 5 children that lived: Willie V.(Female) born Feb. 1888 in South Carolina
Nellie M.BornMay 1890 in South carolina
Jefferson H.bornMay 1892in South Carolina
Francis (Female)bornFeb 1894in South Carolina
Dorothy D.bornMay 1898in South Carolina
I hope this helps.If you have any additional information on his children I would like that information.