Quote "Perhaps she remarried - I don't know. "If you look at the family tree you mentioned it does state another spouse

Birth year 1 year out

Elizabeth May HARRIS
Birth28 NOV 1908 David St. Dowlais Merthyr.
Death31st Dec 2007 Millbrook Residential Home, Pontllanfraith, Caerphilly.
Father Edward Rees HARRIS (1887–1976) NEW
Mother Edith May SCULLY (1886–1976) NEW
Spouse
John Thomas George WALTERS (1903–1965)
Married 1931
Spouse
Thomas Roger THAMAS (1908–1989) Married 1986