Forfarian has discounted the Thomas Morton Baillie who died in Glasgow in 2008.
Another one which may possibly be a half brother to John Allan Watson is a Malcolm Baillie born in Edinburgh in 1937. No death coming up in Scotland before 2019. Gill will have to wait until SP opens again to check this one out. There is also a marriage for a Malcolm Baillie to Ingrid Anderson in 1967 again in Edinburgh.
This Malcolm Baillie would be around 81/82 now.
Dorrie