could this possibly be the marriage.. Llandrogo is on the welsh/Gloucester border, just over the severn bridge
William Vaughan
England, Bristol Parish Registers, 1538-1900
Residence: 01 Aug 1819 Gloucestershire, Bristol, St Nicholas
name: William Vaughan
event: Marriage
event date: 01 Aug 1819
event place: Bristol, St Nicholas, Gloucestershire, England
gender: Female
marital status: Single
spouse: Rachael James
spouse's marital status: Single
digital folder number: 4223349
dave