One possibility for Margaret Risk. There is this marriage on IGI:
Margaret Risk and William Jeffrey on 01 NOV 1872 Milton, Glasgow
One child showing on IGI is a William born on 06 SEP 1873 Bridgeton, Glasgow. Possibly this 1881 census entry for her:
Margaret Jeffrey 39, landlady b. Alloa
William Jeffrey 7, b. Glasgow
Robert G Storach 24, lodger
John R Storach 12 , lodger
Address: Hillhead, Partick Lanarkshire
And in 1891:
Margaret Jeffrey 49, keeps lodgers, b. Alloa
William Jeffrey 17, son b. Glasgow
Address: 45 Bank St, Partick Govan
Margaret is at the same address in 1901, now showing as a Fisher (doulton) with three lodgers.
Monica