Hi, and thanks for the interest.
Yes she is listed as Elizabeth in the 1921 Census living in St Vincent St Edinburgh.
Sorry, but take it the ER is Electoral Register?
So from your post re Shaws St, she did get married, yet I can't find it.
Could this be one of those "irregular marriages" I've read about and if so, would using the other name be recognised for any legal purpose?
Yet she is listed as single on death cert.
Sorry still a little confused