Hello Liz, 1881 has Margaret CAIN (Crowe) born in Bride,

CHECK this John CROWE in the census, starting from 1841 to 1871 if not in 1871 census,

Burial, CROWE John age 59 Bride 25 July 1866

There IS a WILL for, CROWE John 1866 Bride

The WILL should have, Margaret CAIN (Crowe) mentioned in his Will or maybe her children

John CROW and Margaret SAYLE
Marriage, 11 December 1830 Bride
Children,
CROW John 27 May 1832 Bride
CROW Margaret 15 October 1833 Bride
CROW Margaret 29 December 1835 Bride (this entry has parents, John Crow and Margt. QUAYLE )
CROW Elizabeth 6 August 1837 MALEW
CROW Christiana 21 April 1839 MAROWN
CROW William Henry 9 July 1840 SAINT BARNABAS, DOUGLAS
CROW Arthur 17 May 1842 ANDREAS
CROW Isabella 6 June 1844 ANDREAS
CROW Alice 17 May 1846 Bride
CROW Philip 2 April 1852 Bride

1841 census will sort out the 2 Margaret Crow Baptisms above and all the other children,

Hope this is all correct and that now you can add some new Surnames to your family tree,
Averil