Apart from ordering the marriage certificate (which I presume you have done), have you tried genesreunited? I've found quite a few relatives (from first cousin not seen for 30 years to very distant cousins) on there, some with great information about my family tree.
I agree with spudqueen - try Genesreunited.com ... I have just hd a quick look and there is only one John Firr (in 1955) but plenty of Phyllis Brays................ give it a go.
Sorry,i cant help you but i'm looking for Phyllis Bray also,Christopher John Firr is my grandfather....and if you read this spudqueen i might be one of your distant cousins .Christine Firr is my mother. Any information MRO1 has or spudqueen would help me greatly. You can email me at [email protected]. Regards Jo