I'm trying to get the birth years for their children.
Alexander Houston was born about 1888, his father John Houston harbour pilot Troon, mother Annie Wilson.
He married Sarah Smith on the 29th December 1911 in Troon, Ayrshire.
They had the following children
William Houston born 2 December 1915 in Glasgow,
Ernest Houston born ? (know as ernie)
Albert Houston born ?
John Houston born ?
I know they are all recent birth's so even the year would be of help.