Daniel O'Brien, 1st Viscount Clare (Gaelic; Domhnall Mac Conchobhair Ó Briain) was the younger son of Connor O'Brien, 3rd Earl of Thomond

Connor O'Brien, 3rd Earl of Thomond

Connor O'Brien, 3rd Earl of Thomond , called Groibleach , grandson of Conor O'Brien ; succeeded to the earldom, 1553; his right to the lordship of Thomond was disputed by his uncle, Donnell; confirmed in his possessions by Thomas Radclyffe, 3rd Earl of Sussex in 1558, who proclaimed his uncles...

 and Una O'Brien.

He married Lady Catherine FitzGerald, daughter of Gerald FitzGerald, 15th Earl of Desmond

Gerald FitzGerald, 15th Earl of Desmond

Gerald FitzGerald, 15th Earl of Desmond was an Irish nobleman and leader of the Desmond Rebellions of 1579.-Life:...

 and Eleonar Butler. O'Brien was invested as a knight on the 1st July 1604 in Leixlip, Co. Kildare

County Kildare

County Kildare is a county in Ireland. It is part of the Mid-East Region and is also located in the province of Leinster. It is named after the town of Kildare. Kildare County Council is the local authority for the county...

, Ireland

Ireland

Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

 and held the office of MP

Member of Parliament

A Member of Parliament is a representative of the voters to a :parliament. In many countries with bicameral parliaments, the term applies specifically to members of the lower house, as upper houses often have a different title, such as senate, and thus also have different titles for its members,...

 for Co. Clare

County Clare

-History:There was a Neolithic civilisation in the Clare area — the name of the peoples is unknown, but the Prehistoric peoples left evidence behind in the form of ancient dolmen; single-chamber megalithic tombs, usually consisting of three or more upright stones...

 from 1613 to 1614. O'Brien was also a member of the Supreme Council of the Catholic Confederates

Confederate Ireland

Confederate Ireland refers to the period of Irish self-government between the Rebellion of 1641 and the Cromwellian conquest of Ireland in 1649. During this time, two-thirds of Ireland was governed by the Irish Catholic Confederation, also known as the "Confederation of Kilkenny"...

 and was created 1st Viscount Clare

Viscount Clare

-First creation:The titles of Viscount Clare and Baron Moyarta were conferred on Daniel O'Brien, a younger son of Connor O'Brien, 3rd Earl of Thomond, on 11 July 1662. These titles were forfeit by the attainder of the third Viscount in 1691. However, the title continued to be used by his...

 and 1st Baron Moyarta in 1662.
Daniel died in 1666.

Child of Daniel O'Brien, 1st Viscount Clare and Lady Catherine FitzGerald:

Connor O'Brien, 2nd Viscount Clare

Connor O'Brien, 2nd Viscount Clare

Connor O'Brien, 2nd Viscount Clare was the son of Daniel O'Brien, 1st Viscount Clare and Lady Catherine FitzGerald, a daughter of Gerald, 14th Earl of Desmond....