Surname First name(s) District Vol Page
Marriages Sep 1860
Birch William Liverpool 8b 329
Cohen Margaret Liverpool 8b 329

Possibility?

There were these Margarets in the IOM 1841 census (and others) on Brian Lawson's index:
COWEN Margaret 6 Douglas 1465/5 7 10
COWIN Margaret 3 Onchan 1465/1 16 26
COWIN Margaret 2 Douglas 1465/7 9 14
www.iomfhs.im/lawsons/LawsonBMD/census/1841-census/c41-co.html?Submit=Coans+-+Coyne

Sue