I've shown this AB439 in a separate thread previously but from doing some research today I found an amazing story linked to him, along with his 4 brothers they were the inspiration for the Peter Pan story and J M Barrie selected the name Peter from him. Wikipedia has a write up of his story including his WW1 service in the KRRC where he won an MC - in general his story is a sad a tragic read and an upsetting ending Peter Llewelyn Davies - Wikipedia
Yes Barrie and the lost boys - a 1978 award winning BBC mini series The True Story Behind Peter Pan Is Kind Of Crazy