This is really a long shot but it might be worth just bearing it in mind.
I have not been able to trace this family in 1881

1871 RG10/1789/99/14
Church Street, Malpas, Cheshire.
Hugh McCarthy h.m. 40 ? Store Dealer b.
Roscommon, Ireland
Mary wife 34 "
Thomas son 16 "
Maria 14
Betsey 9
Catherine 6
John 5
Hugh 2
Margaret 2 months..........all born Cheshire.