Mabel married Charles Richard Mayne in 1940. Curiously, her record in the 1939 Register has been ammended by hand from Sumpner to Mayne. Was she already living as a married woman at that point?
Sumpner, Mabel Christina
Birth
1904-12-29
11 St Pauls Road, Southsea, Hampshire
Census
1911--
171 View Street, Liverpool
Census
1939--
47 Deauville Road, Liverpool
Marriage
1940-7-6
Church of the Blessed Sacrament, Rice Lane, Walton-on-the-Hill, Liverpool North
Death
1994-12-22
Marie Curie Centre, Woolton, Liverpool