A letter by son Martin to the Mennonitische Rundschau (15 Mar 1933, p7:3) states that his father (#102674) was the cousin of Bernhard Hamm (#26625). Exactly how they were related is unknown.
Citations:
1
[6]
Die Mennonitische Rundschau,
Published in Elkhart, Indiana 1880-1908; Scottdale, Pennsylvania 1908-1923; Winnipeg, Manitoba 1923-2007 [15 Mar 1933, p7:3]
View p7
2
[2738]
Pretoria, Orenburg, Russia Mennonite Church Registers: Series #1, Vol. #1 [68]