.... her only registered occupation I've found is a Calender Worker....
William's birth shows her occupation as 'Calenderer's folder'. In 1881 she is probably the Margaret CARIGAN, aged 21, born Glasgow, Sewer & Folder Calanderer,
also boarding at 5 Towers Street, Kinning Park. This is from a transcription only and doesn't give her marital status. I think you need to be a bit flexible with her year of birth.
Debra
