Where is/was Slancer Street?

I’ve been looking into some family history and according to the 1901 Census some of them lived in Slancer Street in Swindon. Most of the family lived in Rodbourne or Rodbourne Cheyney areas going back to the 1860s. I’ve lived in the area all my life and I know most of the old streets in Swindon but I’ve never heard of Slancer Street and I can’t find it on any map. Perhaps its disappeared or been renamed. It may even be a misspelling.

Does anybody know where Slancer Street was, I’d be interested to find out.