This might be their marriage:

Name John Jelfe
Spouse's Name Katharine Hazell
Event Date 11 Aug 1700
Event Place St. Werburgh'S Church, Bristol, Gloucester

Found on Family Search:
Indexing Project (Batch) Number I03218-5
System Origin England-EASy
GS Film number 1595994
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I think it need some confirming evidence first.
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