>I used to date a girl called Jane, of Scottish parents, whose sister was Shona (i believe of Hebrew origin but very much adopted in Gaelic - also "God is Gracious") which they perported to be the gealic form of Jane. SO 2 sisters with the same name.

Maybe Shona as a shortened version of Shoshana? Otherwise, I don't recognize it as a Hebrew name. Okay, looked it up. Apparently, it's a variant of Shaina (or Shana or Sheina), meaning beautiful. But Wikipedia does turn it up as a Gaelic version of Jane.

Tamar