You are definitely related to me and our family as all my relatives came from Ely to Cambridge at the beginning of the 1900's.
A Robert lived at Prickwillow which is just outside Ely I seem to remember in the late 1800's. He was my G G Grandads brother. Most of them were watermen on the Cam river and ended up in the workhouse at the end of the 1800's.
I have a complete tree for most of the Ely Allensbys if you want it you can contact me direct by clicking on my original message and accessing my email address.