I am looking for the parents of William C. Alder, b. abt. 1832 in Maryland. He died between 1880 to 1890 in DC?. He married Mary R. Alder, b. 1836 in MD or NY.
William was a Washington, DC City Police officer for about 10 years. They had six children, I found them in the 1880 Census in DC: William Alder (48) Mary A. (44) Thomas H.(15) William C. Jr (11) Joseph L. (7) Clifton (5) Lula (4) Virggie (2)