Was eva married 2x? how does her son have surname davies? did he emigrate to usa (when/where he lived?)
marion Bennett lived in romford -where is that?? what time period?
hav e you checked an obit form your line to see if any of these people are mentioned?(you must berelatedto eva's brother or sister)
what sources have you used besides jewishgen.org? familysearch? ancestry?
really need a bit more info.....