John Connor marriage to Bridget Rochford 1864 Dublin North

I'm trying to find relations of a farm labourer, Garratt or Garrett Rochford (Reatchford / Ratchford /Rushford / Rachford married to a Kate or Catherine Sullivan.  They have a son Michael born 1845-1848 somewhere in Wexford.

 I have found a Garratt Rochford listed as the father of a Bridget Rochford marrying a John Connor in 1864 in Dublin North.  The marriage record indicates she was age 26 therefore born ~1838.

Ireland Marriages 1845-1958 Transcription

• First Name: Bridget 
• Last Name: Rochford 
• Country: Ireland 
• Category: Life Events (Birth, Marriage, Death) 
• Record collection: Marriages 
• Record set: Ireland Marriages 1845-1958 
• Year: 1864 
• Registered Quarter/Year: 1864 
• Registration District: Dublin North 
• Volume: 12 
• Page: 551 
• Spouse Forename: John 
• Spouse Surname: Connor 

I have found one death registration for a Garret Rochford who dies 1877 in Killegney, Wexford and have found a Bridget Rochford confirmation in the parish of Rathnure and Templeudigan, county Wexford, diocese of Ferns in August 1853.  (apperantly the RC parish of Killegney was divided in 1852)

Anyone recognise this family group?  Are they in fact connected?

Help!