| Baby Name | Meaning | Gender |
|---|
| Manus | Surname. | Male |
| Maonaigh | Wealthy | Male |
| Marcas | Of Mars. The Roman Fertility God Mars For Whom March Was Named. | Male |
| Marcus | Hammer | Male |
| Mark | Tristan's Uncle | Male |
| Martin | Warrior Of Mars. | Male |
| Mason | Stone Worker | Male |
| Matthew | Gift Of Jehovah. In The Bible Mathew Was One Of The 12 Apostles. He Wrote The First Gospel Account Of The Life Of Jesus. | Male |
| Mccoy | Surname. | Male |
| Melvin | Strong Friend | Male |
| Melvyn | Strong Friend. Possibly Friend Of Michael. | Male |
| Merric | Ruler Of The Sea | Male |
| Mervin | Famous Friend | Male |
| Michael | Gift From God | Male |
| Micheal | Form Of Michael Who Is Like God? | Male |
| Miles | Merciful. | Male |
| Molan | Servant Of The Storm | Male |
| Moriarty | Expert Seaman | Male |
| Morrissey | Choice Of The Sea | Male |
| Muireadhach | Lord Of The Sea | Male |
| Mukonry | Hound Of Prosperity | Male |
| Mulcahy | Battle Chief | Male |
| Murchadh | Protector Of The Sea | Male |
| Murphy | Seawarrior | Male |
| Murray | From The Sea. Ancient Scottish Clan Surname. | Male |