Earl Castle Stewart

Earl Castle Stewart, in the County Tyrone, is a title in the Peerage of Ireland. It was created in 1800 for Andrew Thomas Stewart, 9th Baron Castle Stewart.

The Earls of Castle Stewart claim to be the head representatives in the pure male line of the Scottish Royal House of Stuart. They are directly descended from Sir Walter Stewart (died 1425) Keeper of Dumbarton Castle, younger son of Murdoch Stewart, 2nd Duke of Albany, son of Robert Stewart, 1st Duke of Albany, younger son of King Robert II of Scotland. One of Sir Walter's sons, Andrew Stuart, was created Lord Avandale (or Avondale) in 1459 and became Lord Chancellor of Scotland from 1460 to 1482. Another son, Walter Stewart, became feudal Baron of Morphie and was legitimized in 1479. His grandson Andrew Stewart was created Lord Avondale circa 1499, a revival of the title which had become extinct on his great-uncle's death in 1488. Andrew, Lord Avondale, was one of the many Scottish peers who were killed at the Battle of Flodden in 1513.

The eldest son of Lord Avondale (killed 1513), Andrew Stewart, 2nd Lord Avondale, exchanged the Lordship of Avondale with Sir James Hamilton for that of Ochiltree (see the Lord Ochiltree for further history of this title) by an Act of Parliament in 1542, becoming Lord Stuart of Ochiltree. He was succeeded by his son, Andrew Stewart, 2nd Lord Ochiltree. His son, Andrew Stuart, 1st Baron Castle Stuart succeeded him as 3rd Lord Ochiltree and became First Gentleman of the Bedchamber to King James VI. To raise money, in 1615 he resigned the feudal barony of Ochiltree and the peerage to his first cousin, Sir James Stuart, the son of James Stewart, Earl of Arran, younger son of the second Lord Ochiltree.

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