Very interested that I came upon your message. Ron was my Dad. I have just been doing some research on his WW2 captivity but with not much detailed info. So if you got any info you can share it would be very much appreciated.
Sadly I was only 3 when he passed away in 1967, following on to the photo you have, I think that would have been his first marriage to Doreen, he married again in 1955 to my mum, his first wife died of TB.