Hi
Here is Mary with son William and wife in 1901:
Reg 644/6
@ 6 Swan Street, Glasgow Port Dundas, St Rollox
Mary McNeillis, b. c 1842 Ireland, Head
William McNeillis, b. c 1876 Glasgow, Son, Oil Cake Presser
Mary McNeillis, b. c 1880 Glasgow, Daughter in Law, Transferrer.
Still looking on 1891.....
Cheers
Ellen.