Hi Joe,
I found some information on Janet Barr Darroch and Thomas Ward. It's from the Scotland's People website:
https://www.scotlandspeople.gov.uk/
Janet Barr Darroch:
Born 29th October 1914 at 15 Manse Street, Saltcoats, district of Old Ardrossan
Father Charles Darroch, dock labourer
Mother Mary, née Kerr
Her parents were married on 02nd January 1912 at Dennistoun, Glasgow
She married Thomas Ward on 10th April 1936 at 59 Stevenson Street, Glasgow [her home]. She was working as a domestic servant at that time.
She died in 1982 at Coatbridge. No details available as they're not shown until 50 years after death.
Thomas Ward:
Born 29th November 1907 at 19 Alpine Terrace, Uddingston, district of Bothwell
Father William Ward, coal miner
Mother Sarah, née McCready
His parents were married on 11th July 1900 at Uddingston
At the time of his marriage to Janet he was working as a general labourer. His mother is shown as being deceased. He was living at 58 St. Clair Street, Glasgow.
I can't determine when he died. There are too many people to choose from.
No success with Arthur Thomas. If he was born in Northern Ireland you could try here:
https://geni.nidirect.gov.uk/
There's a bit about the Mackerston Hotel here, in case you hadn't seen it yet.
http://oldlargs.com/Walk%20-%20Bath%20Street%204.html
I hope this helps a bit,
Irene
The most important hour is always the present, the most significant person is the one opposite you right now, and the most necessary deed is always love. - Meister Eckhart (c.1260 - c.1328)