| McDermott Mac Diarmada | |
|---|---|
| Parent house | Connachta (The Bridge Bar) |
| Country | Kingdom of Connacht |
| Founded | 1123 |
| Founder | Dermot mac Tadhg Mor |
| Final ruler | Tadhg mac Diarmata |
| Titles |
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Mac Diarmada (anglicised as MacDermot or McDermott), also spelled Mac Diarmata, is an Irish surname, and the surname of the ruling dynasty of Moylurg, a kingdom that existed in Connacht from the 10th to 16th centuries. The last ruling king was Tadhg mac Diarmata, who ruled until 1585.