The dukedom was first created for William de la Pole, who had already been elevated to the ranks of earl and marquess, and was a powerful figure under Henry VI.
Wingfield Castle in Suffolk in 1827. It was the seat of Sir John de Wingfield (d. circa 1361), chief administrator to Edward the Black Prince (1330-1376), whose daughter and heiress Catherine Wingfield married Michael de la Pole, seated at Wingfield Castle and in 1385 created Earl of Suffolk. His descendants quartered the arms of Wingfield: Argent, on a bend gules three wings conjoined in lure of the field
The second creation was for Charles Brandon, a favourite of Henry VIII; his two sons successively inherited the title, but left no more heirs.
Michael de la Pole, 2nd Earl of Suffolk (1367–1415), son of the 1st Earl, obtained restoration to his father's title in 1398. They were again briefly forfeit in 1399, but almost immediately restored again in 1399
Edmund de la Pole, 3rd Duke of Suffolk (1472–1513), younger son of the 2nd Duke, was allowed to succeed as Duke in 1492, but had to surrender that title in 1493. His earldom was forfeit in 1504
Duke of Suffolk, second creation (1514)
Arms of Brandon: Barry of ten argent and gules, a lion rampant or ducally crowned per pale of the first and second
Charles Brandon, 3rd Duke of Suffolk (1537–1551), fourth son of the 1st Duke, died very shortly after his brother the 2nd Duke also of sweating sickness, and their father's titles became extinct.
Henry Grey, 1st Duke of Suffolk, 3rd Marquess of Dorset (1517–1554), married to a daughter of the Charles Brandon the previous first Duke of the second creation. He was notable as the father of Lady Jane Grey (de facto Queen of England for nine days). After his attempt to place his daughter on the throne failed, he was pardoned, but after his participation in Wyatt's RebellionMary I had him executed for treason in February 1554. His honours were forfeit although, in any case, he had no male issue who would have inherited.
William de la Pole (1396–1450) 4th Earl of Suffolk, 1415–1450 Marquess of Suffolk, 1444–1450 Earl of Pembroke, 1447–1450 1st Duke of Suffolk, 1448–1450
Earldom (3rd creation), Marquessate, and Dukedom (1st creation) of Suffolk and Earldom of Pembroke (6th creation) forfeit, 1450
