Rabbi?/Mordechai ROSENBERG #usa #rabbinic

Karol Swanson
 

My G-GF Marcus (Mordechai) ROSENBERG, age 60,  appeared on the 1910 US Census in NYC as a rabbi (own account!).  His occupation on the 1915 New York State Census is teacher. I don't know any more about his background.  Is there any way I can find out more about his rabbinical activities?  Are there lists available? I believe he was from the Brody area.
Any help would be greatly appreciated.

Karol Schlosser
Scotland

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