Hi Asgood,
In the 1891 census, at 8 Hillview Terrace, Clydebank, Dunbartonshire -
John D(ownie?) McDonald 23 b 1868 Edinburgh - Ship Rivetter
Margaret McDonald 23 b 1868 Glasgow - wife
Robert H(ay?) McDonald 1 Month b 1891 Clydebank
Tom
PS Once you get parents names, we maybe able to confirm in 1871 & 1881 census.