St Ives association according to Whybrow's 1921-1939 list of artists in and around St Ives. 

Richard Dawkins writes: 

'K O Chetwood Aiken appears in your list of Cornwall Artists for whom further information is required.

I had no idea he was an artist, but a Mr K O Chetwood Aiken was a master at Chafyn Grove School, Salisbury in the early 1950s when I was there, and for some years before. He taught what little German was required, but mainly he built and maintained the superb model railway, which was one of the prides of the school. I would guess that he was born circa 1900. As I say, I didn't know he was an artist, but it doesn't surprise me.'