Right, now we're getting somewhere - but not the whole story!
William's wife Christina is at 42 Maitland (ancestry has transcribed as Mailland) Street on the 1901. she is transcibed as McNeillias.
She is head of household, age 23, a Jute Spinner, b. Carycastle (?) with
Alexandria McNeillias, daur, 2, Glasgow
Mary McNeillias, daur, 3 mos, Glasgow
plus 3 of Christinas sisters, Alexandria Stephens, 21, Catherine, 19 and Jane 17
and 2 visitors Marion Longmuir and Rose McLatchin both 18.
Got to go out for few hours, but will look back to see if anyone has found William!
Cheers
Ellen.