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,
Sandal Castle Sussex and Reigate in Surrey, Castle Acre Castle in Norfolk and Conisbrough in Yorkshire. In 1347, Edward III granted Sandal to his fifth son Edmund of Langley who was six years old at the time. His elder brother John of Gaunt held Pontefract and Knaresborough Castles, Edmund was granted Wark Castle near Coldstream in the Scottish Borders, and in 1377 Fotheringhay Castle in Northamptonshire which was to become his home, and for the next 75 years the family seems to have spent little time at Sandal, leaving it to the management of constables or stewards. In 1385 Edmund was made