My maternal grandfather was Henderson. Jim 'Pop' Henderson from Aberdeen originally I think, he's been dead since 1969 when I was 3. He served with the Dover Patrol during WW1, inter war he spent 7 years with the Argyll and Sutherland Highlanders becoming colour sergeant I believe. He was a joiner to trade in civy st, and during WW2 he built barracks for US troops, and made trees etc resemble anti aircraft guns etc.
He came back to Scotland after the war to set up his own sawmill, and with the insurance papers on the mantlepiece yet to be posted, he tragically had an accident with the saw, severing 3 and half fingers, and ending his sawmill career. He apparently had a fine temper too.
My only recollection was him stopping me sucking my thumb saying that it would shrink and disappear like his did, showing me the stumps of his own fingers. Sounds cruel, but it was all good fun.