I think this is Jane in 1901, at 36 Park St., Govan, Lanarkshire. Age looks young, but it might be a transcription error.
Janet M Symes, 40, b. Dumfries,
David Symes, son, 22, Brakesman, b. Dumfries,
William Symes, son, 17, Engine Cleaner, b. England,
Elizabeth Symes, dau, 10, b. Ireland.
Tracing son David Symes, he marries an Annie Maclellan, Kinning Park 1906 and emigrates to Chicago.
His Naturalisation papers on Familysearch say he was born 4 May 1878, David Sproat Cowan Symes.
His son Kenneths baptism on Familysearch says he is David C. Symes born Dunscore, Scotland 1878.
His Death Cert on Familysearch says he is David C. Symes, born 4 May 1878 Scotland and his parents were Janet Milroy and John Cowan.
Janet Milroy married John Cowan, Dunscore Dumfies-shire, 1877.
David Sproat Cowan, born Dunscore 1878.
So this will be them in 1881, Bridgestone Grocers, Urr Kirkcudbright.
John Cowan, 30, Grocer, b. Urr, Kirkcudbright,
Janet Cowan, wife, 27, b. Carmichael, Kircudbright,
David Cowan, son, 2, b, Dunscore Dumfies,
Robert Cowan, son 1, b. Urr, Kirkcudbright
Can't find a marriage for Janet Cowan to a Mr Symes. If she had a child to him in Sunderland in 1883, then she must have split from John Cowan pretty soon after the 1881 census.
Can't find any of them in 1891, except William with his grandmother.
Alan.