A possibility for Desmond's first marriage?
December qtr 1940
Brecknock district vol 11b, page 205
Brewer, Desmond C
James, Phyllis M
Desmond had more siblings!
Unfortunately some of them died early.

All born in Wimborne district:
June qtr 1908 vol 5a, page 227
Brewer, Winston Spencer
June qtr 1907 vol 5a, page 225
Brewer, Alan Louis died the same quarter,aged 0
December qtr 1910 vol 5a, page 198
Brewer, David Lloyd
I think the other child would be this one?
March qtr 1905 vol 5a, page 225
Brewer, Helen Gladys who died June qtr 1907, age 2