Marriage cert

[Linda in Herriot Country]

Hello, I wonder if someone can confirm something for me please. I am helping a friend with her tree and I have this marriage


Name: John Marshall
Date of Registration: Jul-Aug-Sep 1874
Registration district: Kensington
Inferred County: London
Volume Number: 1a
Page Number: 435

to Margaret Collins

The friend has given me a copy of the marriage from the parish records? It is in the old Latin format and is from St Philipps Oratory, London, Brompton in the diocese of Westminster 14th Sept 1874

The Anglicised names are John Marshall and Margaret Collins the fathers are given as Jeremiah Collins and Henry Marshall. There are no fathers occupations or indication if they are alive because of the old format.

My question is, if she orders the marriage cert from the GRO will it be in the modern format giving the extra information, or will it just contain what we already know.

I think I have found Jeremiah Collins in 1841 and in 1851 with a new wife, but an occupation form the marriage cert would help