FamilySearch indexes the birth of Gordon Smith, father Gordon Smith, mother Elizabeth Rae, in Glasgow on 9 October 1863. Not 1871.
Also Margaret Jane Mure Smith, born 31 October 1865 in Govan, who could be Margo(t).
1881 Census: 3 Belgrave Terrace, Govan
Gordon Smith Jr Son (Head) 21 Student Of Arts Glasgow Univ
Jessie Boure Smith 15
Margaret Jane Muir Smith 15
Rae Osborne Smith Son 13
Dalziel Smith Son 11
Norman Smith Son 9
Elizabeth Rae Smith 8
Marion Dalziel Smith Daughter 8
Randolph Smith Son 6