Meadhbh was the daughter of unknown parents. The date and place of her birth have not been found.
She had two marriages/partners. Her first husband was Gerald FitzGerald, who she married in BEF 1493. The place has not been found. They had no known children.
Her second husband was sir William Wellesley, who she married on BEF 3 MAY 1497. The place has not been found. They had no known children.