There is the death in 1942
Deaths March quarter 1943 in Uxbridge of Reuben Simmonds age 82 i.e. born 1860/1 (depending on accuracy of knowledge of informant)
On the probate index it states Reuben of Strathnairn, Mahlon avenue, Northolt, Middlesex, died 30th December 1942, probate to Ronald Harry Simmonds, shipping clerk, and Dorothy Ethel Irene Simmonds, spinster.
(Think Reuben and Dorothy were living there in 1939)
I think this Reuben is in several trees on Ancestry.
Ronald's and Dorothy's Mother's maiden name was Ward, which fits in with those trees.
Marriages September quarter 1895
Reuben Simmonds Fulham 1a 521
Sara Ward Fulham