The link posted in reply #5 is about a painting bequeathed to a gallery in Christchurch, NZ. Here I summarize the salient facts that are given there.
Kathleen Muriel Kay (1904-1949) was born in Wellington NZ, parents Rev Thomas Kay and Fanny Buckley (married 1902)
Family moved to London in ~1906
Kathleen married George F Gee (1st cousin) in 1936 in Peshawar, later divorced.
Kathleen married AAW in London in 1947.
Kathleen died, Windsor 2 years later.
AAW remarried, and died in 1988.
His intention that the painting should be given to Christchurch in memory of Kathleen was honoured following the death of his second wife in 2012.