I have a GG grandmother, Elizabeth Morgan who married Owen Thomas February 24, 1860 at the parish church of Llandegai. The marriage certificate states that they were Married in the Parish Church by
Certificate according to the Rites and Cermeonies of the Establish Church, by
Certificate.
I've just checked Barbara Dixon's site and under the heading for Rest of the Certificate it says:
"by certificate" which would be found on a marriage entry in a register office marriage register or in a non-conformist marriage register. It shows that the couple waited 3 weeks between giving notice and getting married.
"By superintendent registrars certificate" is a very rare finding. It is issued for a Church of England marriage but instead of banns being called in the church, notice of marriage has been given to the superintendent registrar.......
Later on it was sometimes used as an expedient if for some reason the vicar did not want to make the forthcoming marriage in the church public knowledge and have the entry in his banns book which anyone can look at.I have my G grandfather's birth certificate. Elizabeth Morgan mother - No father indicated. She named him John
Thomas. He was born January 25, 1860 - 30 days
before the marriage

The birth was registered by Elizabeth herself on January 28th.
By all accounts she was a very pretty young lady - maybe she charmed the Vicar??? There's also a family rumour that Owen was not John's real father because John was brought up by Elizabeth's parents.
Does anyone else have "marriage by certificate" conducted in a parish church? Or is it possible to check the Superintendent's Register to enquire as to the circumstances of the Certificate?