O'connor Marriage Records: Groom Firstnames
- Matthew J (1)
- Maurice (9)
- Maxie (1)
- Micah (1)
- Michael (114)
- Michael Christhoper (1)
- Michael Edward Patrick (1)
- Michael G (1)
- Michael G. (1)
- Michael J (2)
- Michael J. (1)
- Michael John (2)
- Michael Joseph (1)
- Michael P (1)