The surname "Butler" was originated in the 12th century by Theobald le Botiller FitzWalter (Lord of Preston). Lord FitzWalter accompanied King John to Ireland to help secure Norman areas. When men whom Walter led killed Dermot MacCarthy, prince of Desmond, Walter was granted land holdings of Baggotrath, County Dublin, and the Stein River lands around what is now Trinity College Dublin. He was also given an important fief, on which Walter both founded an abbey and established his Irish seat.
Upon returning to England, King John endowed Walter with the hereditary office "Butler to the Lord of Ireland" in 1177; some evidence indicates that he was also dubbed "Butler of Ireland". As such, he had the right to pour the King's wine. This title can be defined as Governor by today's standards. His son, Theobalde Butler, was the first to hold the name and pass it to his descendants. Walter's grandson was James Butler, 1st Earl of Ormonde. Kilkenny Castle was the main seat of the Butler family.