Think I may have found it:

Findmypast

First name(s) Susannah
Last name Shackcloth
Name note -
Marriage year 1841
Marriage date 1841
Marriage place Christ, Bristol, Gloucester, England
Father's first name(s) William
Father's last name Shackcloth
Mother's first name(s) -
Mother's last name -
Spouse's first name(s) John
Spouse's last name Harrison
Spouse's father's first name(s) Ralph
Spouse's father's last name Harrison
Spouse's mother's first name(s) -
Spouse's mother's last name -
Residence Bristol, Gloucestershire, England
Place Bristol
County Gloucestershire
Country England
Record set England Marriages 1538-1973
Category Birth, Marriage, Death & Parish Records
Subcategory Marriages & divorces
Collections from Great Britain

Family Search

Name: John Harrison
Spouse's Name: Susannah Shackcloth
Event Date: 21 Feb 1841
Event Place: Christ Church, Bristol, Gloucester, England
Father's Name: Ralph Harrison
Spouse's Father's Name: William Shackcloth