Here is all the info that I have:
Born: 1889 Ecclesmachan, West Lothian - Parents James & Helen (Eaton) Hay. In 1891 census - aged 2 lived at Threemiletown, West Lothian, 1901 census aged 12, lived at Shirvadyke, Kirkintilloch. I know these are correct. In 1910, parents and some younger siblings emigrated to Australia, as far as I know, John did not go with them at the time or later. Father James died in Australia in 1935 and listed on Death Cert as having 2 sons predecease him. His son James died in 1905 in Scotland, and I have confirmation that all other sons were all alive after 1935, with the exception of John. I have no further info on John Eaton Hay, but based on his age, I am wondering if he may have been in WW1 and died then, which is why I was questioning the Service Remains info. It is only a guess. If anyone can help with any additional info I would be appreciative.