O'sullivan Marriage Records: Groom Firstnames
- Jeremiah (10)
- Jeremiah Francis (1)
- Jeremiah T (1)
- Jerome (1)
- John (79)
- John D (1)
- John F (1)
- John Francis (1)
- John J (1)
- John J. (1)
- John Joseph (2)
- John P (1)
- John Patrick (1)
- Johnny (1)
- Joseph (12)
- Joseph Eugene (1)