I'm not at all surprised by all those name changes
My Jewish ancestors kept their surname but changed first names more than once and also altered their ages
Iots of detective work to get to the bottom of it
Some of the people with same name could be cousins as their was a tendancy to name children after deceased ancestors.
Also not unusual for whole familes who escaped pogroms in Europe to stay in GB for a decade before going to USA
Good luck sorting it all out .
Looking at school records helped me