Margaret was the daughter of unknown parents. The date and place of her birth have not been found.
Her husband was James FitzThomas FitzGerald, who she married in BEF 1487. The place has not been found. Their only known child was Ellen (?-?).
| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | daughter of Teige O'Brien, Prince of Thomond |