There was a family called Martin in the area in the 70s, they had a newsagents in Webber st, one of my greatest memories is getting caught stealing penny chew and the Mr Martin doing a job on me, phone in hand "yes officer I've got him here" I was bawling lol, I never stole again.
They were a large framed family, could've had German genes.
As an experienced genealogist of many years standing may I suggest, if you have not already done so, looking at the Electoral Rolls for Borough which are available to search on ancestry.co.uk If you find the family you are looking for you can then track them each successive year thus finding our how long they lived at the given address and his descendants, assuming you know their various names, can be tracked the same way as well as by the Census and other means. This would bring the date of residence in Borough more up to date giving you more clues to lead you to present-day descendants. If you run into problems I may be able to help further if you PM me.