Following on from Terry - interestingly there are 2 entries for the marriage of Brian Mainprize - Both the same date 1972 - in Buckrose - but one is Zoe P Willis and the other is Zoe P Matthews. So its looks like it could possibly be your mother?
Hi Jill et al,
Here is aa long shot you might tactfully try for info on your mom
Mr.Brian Mainprize
5 The Lawns
Bridlington
Ref: UK White Pages-BT
From the research I have gathered, Bridlington once had Buckrose in it`s jurisdiction, the latter being the place of Zoe.P.Matthews (Willis) proposed 2nd marriage.