Dermot was a King of Leinster in Ireland. Ousted as King of Leinster in 1166, he sought military assistance from King Henry II of England to retake his kingdom. In return, MacMurrough pledged an Oath of Allegiance to Henry, who sent troops in support. As a further thanks for his reinstatement, MacMurrough's daughter Aoife was married to Richard de Clare, the 2nd Earl of Pembroke and a Cambro-Norman lord, known as "Strongbow."
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Dermot Morgan's birth name is Dermot John Morgan.
Dermot Murnaghan's birth name is Dermot John Murnaghan.
Dermot Palmer's birth name is Dermot Edward Henry Palmer.
Dermot Walsh's birth name is James P. Dermot Walsh.
Dermot Martin is 6'.
Dermot Tynan is 5' 8".
Dermot Morrah was born in 1904.
Dermot Keaney is 6' 2".
Dermot Brogan is 177 cm.
Dermot O'Hurley was born in 1530.
Dermot McCarthy was born in 1954.