Soes Manus Keizer was the son of Simon Keizer and Saartje Marcus. He was a rabbi.
H. Hamburger and J.C. Regtien, Joodse oorlogsmonumenten in de provincie Overijssel, alsmede algemene oorlogsmonumenten waarop joodse namen voorkomen. Profiel (Bedum 2002) 40
A memorial in Rijssen commemorates the Jewish victims of this town. More information on this memorial can be found (in Dutch) on the website o…