Una was born about 1337, the daughter of unknown parents. The place is not known.
Her husband was Mahon Moinmoy O'Brien. They were married, but the date and place have not been found. Their two known children were Brian Catha An Eanaigh (c1355-c1399) and Conchobhar MacMathghamhna (?-1426).
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | ABT 1337 |
|