He was described as a "Knight of goodly personage, and as comely a man as could be seen", and performed services to the Crown of England. As recompense, the Lords of the council, in their letter to the Deputy Lieutenant, St. Leger, dated at Windsor 5 August 1550, transmitted the directions of King Edward VI of England to create him Viscount Mountgarret. This was done by patent, bearing date at Dublin 23 October. In the reigns of Edward VI and Queen Mary, he was keeper of the castle of Ferns. On 20 March 1558 he joined in a commission of martial law with Sir Nicholas Devereux for the territories of Fassaghbentry and LeMoroe's country. On 13 April 1559 was in two several commissions "for the preservation of the peace in the counties of Kilkenny, Tipperary and Wexford",. during the absence of the Deputy Lieutenant, Lord Sussex, in the north, uon his expedition against Shane O'Neill. On the following 12 January he was present in the Parliament.
Death
He died in 1571 and was buried alongside his ancestors in St. Canice's Cathedral, Kilkenny city.
Marriage and children
His first wife was Eleanor, daughter of Theobald Butler of Nechum in the county of Kilkenny, by whom he had Edmund, his successor.
His second marriage was to Catharine, daughter and heir to Peter Barnewall of Stackallan in Meath, and by her he had a son Barnewall, who died unmarried.
His third marriage was in 1541 to Anne, daughter of John Plunket, Lord Killeen, from whom he was divorced in the first year of their marriage. They had five sons and four daughters, viz.
Pierce Butler, ancestor to the family of Carter, otherwise Clounegeragh,
John, who left children.
Thomas, who left children.
Ellice or Cicely married to Walter Walsh of Castlehoel.
Margaret, who married Sir Nicholas Devereux, the younger, of Ballymagin, Wexford, Knt. and had no children.
Lady Eleanor Butler,, who first married Thomas Tobin of Cumpshinagh in Tipperary; secondly to Gerald Blanchville of Blanchvillestown, Kilkenny; and thirdly to Thomas, Lord Caher, son of Theobald Butler, 1st Baron Cahir. She died childless.
Ellen, who was the first wife of Sir Oliver Shortall of Ballylarkan, Knt. by whom she had James Shortall, his successor there. Ellen Butler was later married to Lucas Shea, one of there posterity being Sir Thomas Hurley.