Rebecca Schlosberg (Siskind) - Schlosserg family tree

I am trying to find out as much as possible about my namesake Rebecca Schlossberg. I have just recently began my research and any infowould be amazing! This is what I know( only a small amount). My grandmother Janice Shirley Hoffman(Copeland) is the daughter of Dorothy Copeland who was married to Bennett Copeland. Dorothy is the daughter of Rebecca who was married to Harris Schlossberg. I want to see if I have this correct...she came from London I believe. Thanks, Rebecca