Hi debi,
I too have been researching this Feldman family. Please contact me to discuss as I have a ton more information to share.
There were 7 children, Eva, David, Rose, Rae (Rachael), Sarah, Joseph (Twins) and Louis, my grandfather, b.1903.
Eva and David were born in Russia, the others all in Bethnal Green. Immigrated to the US in 1904... just a bit to start.