O'leary Marriage Records: Groom Firstnames
- Jackson (1)
- James (24)
- James F (1)
- James J (1)
- James Thomas (1)
- James Wilson (1)
- Jamie (4)
- Jeremiah (11)
- Jerome (2)
- John (53)
- John Anthony (1)
- John Francis (1)
- John Frank (1)
- John J (1)
- John Jay (1)
- John Joseph (1)
- John M (1)
- John Michael (1)
- John Patrick (2)
- John W (1)
- Jonathan (1)
- Joseph (13)
- Joseph F (1)
- Joseph John (1)
- Joseph Patrick (1)
- Joseph T (2)
- Jospeh (1)