Hello, Just revisiting these posts here. I am from Gottlieb Isaak's line, but not Jacob. I did find the following notes in my file, though:
These details listed by Ernestine Isaak-Kluckman-Krumdick on May 16th 1985. She gives a detailed account of her family history. Katherine Almer was the daughter of Micheal and Eva Schuman Almer. They had a total of 13 children.
You might be able to trace the Schuman line at Odessa3.org.