Hi there,
It does appear that Hugh died a while earlier than you and the family thought. The Hugh Loney who died in 1940 is indeed your man.
Hugh Loney, aged 45, general labourer (married to Mary Connell Petrie or Mirrilees)
d. September 10th 1940 @ 26 George Street, Glasgow
parents - James Loney, coal miner (dec.) and Helen Loney m.s. O'Donnell
death registered by Mary Loney, widow (September 10th 1940 @ Glasgow)
Looks like father James may have died 1915, aged 48 in Campsie, Stirlingshire, and Mary (widow) 1977 in Glasgow, aged 82.
hume