Thank you all for your input, certainly a thinking cap needed. The lady in question was married as Alice, was Elspeth on her husband's death certificate, back to Alice as next of kin on a son's enlistment papers, mostly Alice in the census but one Elspeth. It may be worth me looking at a child's death cert sometime.
I had found Elsie as an abbreviation for Elizabeth in the early 18th century, again a Scottish family. I will look out for that book.