Hi Donna, I think that Margaret and Catherine were Calvin sisters.

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Name: Philip Cain
Event Type: Marriage
Event Date: 12 Mar 1791
Event Place: Onchan, Isle of Man
Gender: Male
Marital Status:
Father's Name:
Mother's Name:
Spouse's Name: Catharine Calvin
Spouse's Marital Status:
Spouse's Father's Name:
Spouse's Mother's Name:
Digital Folder Number: 004496022
Image Number: 00030

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Liverpool, England, Baptisms, Marriages and Burials, 1659-1812
about George Hassleden
Name: George Hassleden
Marriage Date: 5 May 1806
Marriage Parish: Liverpool, St Nicholas
Spouse's Name: Margaret Gurry
Reference Number: 283 NIC/3/7

Image shows that Margaret was a widow.

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Margaret's first marriage:

Liverpool, England, Baptisms, Marriages and Burials, 1659-1812
about John Gorey
Name: John Gorey
Marriage Date: 9 Dec 1798
Marriage Parish: Liverpool, St Peter
Spouse's Name: Margaret Calvin
Reference Number: 283 PET/3/5

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Jean C