[Ger-Poland-Volhynia] Anna Balkau(Balko) born in Marianowo/Pultusk, emigrated in May 1907 to US

[Birgit]

Dear members,

I am searching for my ancestor Anna Balkau(Balko), born as Anna Juliane  
Balkau 1881 in Marianowo near Pultusk(Poland). She emigrated to USA on  
S.S. Zeeland in May 1907 with her brother Rudolf Balkau.

She was single. Her son Jan(Johan) was three years old and she was not  
allowed to travel with him because he was very ill. So he stayed in Poland  
without parents.

Your help would be very much appreciated.
Birgit Jenning