Did he move to Nottingham? 1911 census there has parents Alfred and Agnes, sons Harry, and Ernest aged 14 both born in Glasgow.
https://familysearch.org/ark:/61903/1:1:XWS6-S9S : 21 December 2018
There’s an extensive family tree for this one on Ancestry showing birth 10 November 1896, served in South Staffs Regiment WW1, married Gertrude Hughes 1924 Nottingham, death 10 March 1977.
This is a link to his profile
And the tree
Don’t know how much these will show if you don’t have a subscription though.