Otis Keilholtz was born on February 8, 1838, at 92 North Greene Street in Baltimore.
[1][2] Keilholtz served in the Fifth Regiment, Company H, of the Maryland National Guard.
Keilholtz served in the Baltimore City Council, representing the thirteenth ward, from 1874 to 1875 and 1877 to 1879.
They had two sons and three daughters: Pierre, Otis, Adele, Claudia and Lydia.
[2] Keilholtz died of Bright's disease on September 13, 1883, at his house in Baltimore.