I think that Jane may be an errooneous entry, as Ann was born in Liverpool.

In 1881 in Salford RG11/3946
Thomas Collins Head Mar 44 General labourer b Douglas
Ann Wife 42 b Liverpool
Mary J Dau Unm 20 Cotton weaver b Douglas
Thomas son Unm 18 Bleacher's Assistant b Douglas
James son 11 b Douglas
Sarah A dau 6 b Pendleton Lancsashire
Ann dau 6 b Pendleton