| Mesgegra | |
|---|---|
King of Leinster | |
| Other names | Mess-gegra, Mes Gegra, Mes Gedra |
| Texts | The Tale of Mac Da Thó's Pig, Cethri meic Airtt Mis-Telmann |
| Region | Leinster |
| Genealogy | |
| Parents | Deaf and mute parents; father's name was Art (belonged to the tribe of Domnann) |
| Siblings | Mac Da Thó aka Mes Róidia, Mesdana, Mesdomnand |
| Consort | Buan |
In Irish mythology, Mesgegra (Mess-gegra, Mes Gegra, Mes Gedra) was king of Leinster during the events of the Ulster Cycle, and was also the brother of Mac Da Thó aka Mes Róidia in The Tale of Mac Da Thó's Pig.
Mesgegra was killed by the Ulster warrior Conall Cernach, who preserved Mesgegra's brain in lime as trophy. But the brain-ball was stolen by the Conacht warrior Cet mac Mágach who shot it at the Ulster king Conchobar Mac Nessa and lodged in his head, killing him seven years later, thus fulfilling the prophecy that Mesgegra would somehow avenge his own death.