Sir Thomas Butler, 1st Baronet (d. 1642) was an Irish nobleman, the illegitimate son of Sir Edmund Butler of Cloughgrenan and grandson of James Butler, 9th Earl of Ormond.

He was High Sheriff of Carlow

High Sheriff of Carlow

The High Sheriff of Carlow was the British Crown’s judicial representative in County Carlow, Ireland from the 16th century until 1922, when the office was abolished in the new Free State and replaced by the office of Carlow County Sheriff. The sheriff had judicial, electoral, ceremonial and...

 for 1612 and 1622. He was created a Baronet

Baronet

A baronet or the rare female equivalent, a baronetess , is the holder of a hereditary baronetcy awarded by the British Crown...

 of Cloughgrenan (a townland

Townland

A townland or bally is a small geographical division of land used in Ireland. The townland system is of Gaelic origin—most townlands are believed to pre-date the Norman invasion and most have names derived from the Irish language...

 near Carlow

Carlow

Carlow is the county town of County Carlow in Ireland. It is situated in the south-east of Ireland, 84 km from Dublin. County Carlow is the second smallest county in Ireland by area, however Carlow Town is the 14th largest urban area in Ireland by population according to the 2006 census. The...

 town) in 1628 by King Charles I

Charles I of England

Charles I was King of England, King of Scotland, and King of Ireland from 27 March 1625 until his execution in 1649. Charles engaged in a struggle for power with the Parliament of England, attempting to obtain royal revenue whilst Parliament sought to curb his Royal prerogative which Charles...

. His father had three other legitimate sons; Pierce, James and Theobald. The two elder sons (Sir Thomas's half brothers) were executed by their own uncle Thomas Butler, 10th Earl of Ormond at Thurles during their rebellion in 1596. The third son, Theobald, was created Viscount Butler of Tulleophelim

Viscount Butler of Tulleophelim

Viscount Butler of Tulleophelim, in the County of Carlow, was a title in the Peerage of Ireland. It was created on 4 August 1603 for Theobald Butler, the son of Sir Edmund Butler of Cloughgrenan, second son of James Butler, 9th Earl of Ormond . He later served as Lord Lieutenant of Carlow. The...

.

This title died with the first bearer. The Cloughgrenan line survives to the present day through the illegitimate line of the baronets.