think this is them on 1891 in Manchester - matches the 1901 in many details (eg 1901 he is a blind Crimean pensioner)
Thomas Obrien    50 - b Galway, pensioner, blind
Bridget Obrien    48 - b London
Michael Obrien    28 - son b Dublin. Groom, married
Henry Obrien    20 - son b Dublin. Labourer, single
Emma Obrien    29 - daughter in law b Liverpool
Mary A Obrien    8
Edward Obrien    6
Henry Obrien    4
Rachael Obrien    1
The young children say son and daughter but I'm assuming this probably refers to Emma as mother.
Given the sons' birthplace, you may need to look in Ireland for a marriage,
RG12, 3237, 112, 21