Just found that she and Joseph had 4 further children in Prescot - son 1940, son 1944, daughter 1946 and another son in Dec.1948.
An online tree shows Florence died 23/4/1949 and buried at Allerton Cemetery, Liverpool.
With a family of young children one would think that maybe Joseph married again - there's a possible marriage at Prescot in Dec.1949 but with such a common name can't say that this was him.
He was born 31/1/1907 and died Dec.1969 Prescot.
Annette