There was a William Bain, aged 12, on the CALEDONIA, sailing from Glasgow to New York, departing 26 Sept 1930.
Estimated date of birth 1918.
Also with him was someone named And Bain (probably Andrew), who was under twelve. And there was an Isa
Bain, aged 26, born 1904. They had all come from the same address: 7 Creighton St, Leith [which is on the outskirts of Edinburgh]
Just one puzzle.... if Isa is 26, then she probably isn't the mother of the two children, because William is 12.