1940 electoral roll and still there in 1947 roll
80 Eglington Street, Glasgow
William McCaffrey and Mrs. Jane McCaffrey
I think Neale is on the right track, Kevin.
Likely brother for Mary was a Joseph McCaffrey who married in the Gorbals, Govan in 1940. His parents show as William McCaffrey and Jane McClew. William, father, is showing as a confectioner.
Joseph was in the army at this time, so was in an army camp in the Edinburgh area at the time of the marriage.
So, looking at this couple. William McCaffrey and Jane Davies McClew. They married in 1917 in the Gorbals area of Glasgow.
Mary was born a little earlier than her age showed on her marriage entry. Her birth was on 27 January 1920, father William, a confectionery worker and army pensioner and Jane Davies McClew.
Monica