Hello Denis
Just read your message. I have record of a Heinrich H Isaac born Sept 12 1893 in South Russia and who died 25 Jan 1961 in Winnipeg, Manitobia Canada. No record of his parents.
He is listed as having been married a Katharina Niebuhr (sp?) and they had 2 children, Ernest and Aurthur. Information source is GRANDMA CD.
Not necessarily connected to my family but if this reference is of interest and your are not familiar with GRANDMA database let me know.
Direct email contact at
TECHED@DIRECT.CA