Pierce Edmond O'Brien-Butler (died 1902) was an Irish

Ireland national rugby union team

The Ireland national rugby union team represents the island of Ireland in rugby union. The team competes annually in the Six Nations Championship and every four years in the Rugby World Cup, where they reached the quarter-final stage in all but two competitions The Ireland national rugby union...

 rugby union

Rugby union

Rugby union, often simply referred to as rugby, is a full contact team sport which originated in England in the early 19th century. One of the two codes of rugby football, it is based on running with the ball in hand...

 international player. He won six caps between 1897

1897 Home Nations Championship

The 1897 Home Nations Championship was the fifteenth series of the rugby union Home Nations Championship. Four matches were played between 9 January and 13 March. It was contested by England, Ireland, Scotland and Wales...

 and 1900

1900 Home Nations Championship

The 1900 Home Nations Championship was the eighteenth series of the rugby union Home Nations Championship. Six matches were played between 6 January and 17 March. It was contested by England, Ireland, Scotland and Wales.-Table:-Results:...

. Pierce was a member of a titled family, the Barons Dunboyne. His own branch of the family originated in County Tipperary, where they lived at Bansha Castle in the 18th century.

He was killed in action during the Anglo-Boer War

Second Boer War

The Second Boer War was fought from 11 October 1899 until 31 May 1902 between the British Empire and the Afrikaans-speaking Dutch settlers of two independent Boer republics, the South African Republic and the Orange Free State...

in 1902.