O'connor Marriage Records: Groom Firstnames
- Dale (3)
- Damian (2)
- Daniel (76)
- Daniel F (1)
- Daniel Gary (1)
- Daniel J (1)
- Daniel Joseph (1)
- Darrell (1)
- Darrin (2)
- David (18)
- Deards (1)
- Denis (16)
- Denisco (1)
- Dennis (31)
- Dennis A (1)
- Dennis J (2)
- Dennis John (1)
- Dennis Michael (1)