In 1939, Arthur and Alice are at 49 Feverel Avenue, Scunthorpe. A child is blanked out, presumably Alan.
There is an Alan Knott who was a casualty in the Korean War in 1950, but no age given.
Alice died, Q2 2002 in North Lincolnshire.
David
P.S. I forgot to mention that they are transcribed as Knoxx and I have reported the error.
If Alan is blanked out, it suggests that he may still be alive and so no information can be given about him.