Not sure what you already have. Are you on Ancestry? Actual pictures of him. Also a tree.
1870 Buffalo, Erie, New York, USA
Minnesota Marriage Index
Charles Ernie Aman
Cora Lamb
Minneapolis, Hennepin, Minnesota 17 Jul 1895
Cora remarried after his death to Victor Peterson. In 1880 census, residing in Owego Tioga NY w/ parents listed above. The family is listed as mulatto, father black. Haman is the last name. 1900 1910 census, ssa on dau edith, birth rec for Theodore & Rose, Bessie
If you make his profile I can add a few things. You may find some of these records on family search.
Source Citation: Year: 1880; Census Place: Brooklyn, Kings, New York; Roll: 844; Page: 356D; Enumeration District: 061
Source Citation: Year: 1880; Census Place: Minneapolis, Hennepin, Minnesota; Roll: 622; Page: 151D;
middle name started out as Emil
in the Minnesota, Marriages Index, 1849-1950
Ancestry.com. Minnesota, Marriages Index, 1849-1950 [database on-line]. Provo, UT, USA: Ancestry.com Operations, Inc., 2011.
Jacob's wife - probably died shortly after birth of daughter