Costa Marriage Records: Groom Firstnames
- Carlos (9)
- Carlos Charles (1)
- Carmelo (1)
- Carmine (1)
- Casimiro (1)
- Charalambos (2)
- Charles (10)
- Charles Andrew (1)
- Charles Theodore (1)
- Christian (4)
- Christodoulos (2)
- Christopher (9)
- Conrad (1)
- Corrado (1)
- Cristano (2)