BADLESMERE, BARTHOLOMEW, BARON (I 275— 1322) , English nobleman, was the son and heir of Gunselm de Badlesmere (d. 1301), and fought in the English army both in France and Scotland during the later years of the reign of Edward I. In 1307 he became governor of Bristol castle, and afterwards steward of his household to Edward II. He conspired with some other noblemen to gain supreme influence in the royal council. Although very hostile to Earl Thomas of Lancaster, Badlesmere helped to make peace between the king and the earl in 1318, and was a member of the middle party which detested alike Edward's minions, like the Despensers, and his violent enemies like Lancaster. The king's conduct, however, drew him to the side of the earl, and he had already, joined Edward's enemies when, in Oct. 1321, his wife, Margaret de Clare, refused to admit Queen Isabella to her husband's castle at Leeds in Kent. The king captured the castle, seized and imprisoned Lady Badlesmere, and civil war began. After the defeat of Lancaster at Boroughbridge, Badlesmere was taken and hanged at Canterbury on April 14 1322. His son and heir, Giles, died without children in 1338.