I have found Galina Baranova very reliable and helpful. She was an Archivist in the Lithuanian Archives but now works privately as a Professional Genealogist..
Galina Baranova <odegute@...>

Arlene Beare UK
Co-Director Larvia Research Division

Dorfman (born Birzai Lithuania and then lived in  Riga).  Scher/Blum(born Pandelys Lithuania and then lived in Riga). Berman (born Lygumai Lithuania and then lived in Jekabpils Latvia .
Samuels -  Benjamin and brother Joseph Zychlin Poland/
Dembinski Zychlin Ring Poland