Julius Schlome was born on August 2, 1891 in Janowitz/Posen, the son of Hermann Schlome and his wife Auguste née Frost.

Hermann Schlome was born on January 21, 1857 in Janowitz into an Orthodox Jewish merchant family, became a lumber merchant, and married Auguste Frost.

Auguste Frost was born on July 6, 1862 in Zerkow into a Jewish family.