Michael de la Pole, 2nd Earl of Suffolk his eldest son Michael, who later died at Agincourt. Michael married Katherine de Stafford, daughter of Hugh de Stafford, 2nd Earl of Stafford. They were parents to at least eight children: Michael de la Pole, 2nd Earl of Suffolk Michael de la Pole, 2nd Earl of Suffolk (1367 – 17 September 1415) was an English nobleman who supported Henry IV (reigned 1399-1413) against Richard II (reigned 1377-1399) during the turmoils of the late 14th century. He died during the Siege of Harfleur in 1415. He was a son of Michael de la Pole, 1st Earl of Suffolk and Katherine Wingfield,
Pontefract Castle was succeeded by his eldest son, John. However, the King took possession of Castle Donington and Pontefract Castle. The de Lacys lived in the castle until the early 14th century. It was under the tenure of the de Lacys that the magnificent multilobate donjon was built. In 1311 the castle passed by marriage to the estates of the House of Lancaster. Thomas, Earl of Lancaster (1278–1322) was beheaded outside the castle walls six days after his defeat at the Battle of Boroughbridge, a sentence placed on him by King Edward II himself in the great hall. This resulted in the