O'Sullivan of Munster – Ua Súileabháin Mhumhain

O'Sullivan Ó Súieabháin  originated in South Tipperary before they were forced Westward during the Anglo-Norman invasion where they became one of the leading clans of Munster Eoghanacht. There are a number of sub branches represented by the clan association including:

O'Sullivan Mór

O'Sullivan Beare

O'Sullivan MacCragh

Mac Fineen Duff (extinct)

The cadet clan of MacGillycuddy of Reeks evolved into a separate clan and are listed separately on the Register of Clans.

Website: www.osullivanclan.com

Email: taoiseach@osullivanclan.com

Contact: Daniel JSullivan (Chief), 5 Berg Avenue, Elberon, New Jersey 07740