Eochaid Mugmedon

Eochaid Mugmedon ("slave-lord") was a semi-historical of the  who was said to be the ancestor of many of Ireland's most significant dynasties, such as the  and the.

By his wife,, he had sons , and. By a slave he captured on a raid in, he had a son, Niall, later known as  (Niall of the Nine Hostages).

As of, his senior descendant in the male line is Desmond, the.

The Connachta
|                       |                        |                        |                        |                        |                        |                        |                        |                        |                        |                        |                Eochaid Mugmedon +        +               |                  |     _________|_________         |     |        |        |         |     |        |        |         |     Fiachrae  Ailill (The )          | __________________________|_______________________________________________________      |          |       |      .      |           |        |             |            |       |          |       |      .      |           |        |             |            |   Endae. Conall Cremthainne Fiachu |     .      |           |              ________|________                          |      .      |           |              |               |                     Muirdeach. Cormac Caech      Fergus Cerrbel      Ardgal |     .      |        (d. )           | |     .      |                          |                   Muirchertach. Tuathal mac Ercae. Maelgarb (d. ). (d. )                  (d. ) .      (Northern ). (Southern )