Duke of Suffolk is a title that has been created three times in the peerage of England. 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. The second creation was for Charles Brandon, a favourite of Henry VIII; his son and two grandsons successively inherited the title, but left no more heirs. The third creation of the dukedom of Suffolk was for Henry Grey, 3rd Marquess of Dorset, in 1551. The duke also held the title Baron Ferrers of Groby. These titles became forfeit when the duke was attainted in 1554.
Michael de la Pole, 2nd Earl of Suffolk, 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
Michael de la Pole, 3rd Earl of Suffolk, eldest son of the 2nd Earl, died without sons
William de la Pole, 4th Earl of Suffolk, second son of the 2nd Earl, was created Marquess of Suffolk in 1444
Marquesses of Suffolk (1444)
William de la Pole, 1st Marquess of Suffolk was created Duke of Suffolk in 1448
Dukes of Suffolk, first Creation (1448)
William de la Pole, 1st Duke of Suffolk, arrested for his failures in France, his honours were forfeit in 1450
John de la Pole, 2nd Duke of Suffolk, only son of the 1st Duke, was restored to his father's honours in 1463
*John de la Pole, 1st Earl of Lincoln, eldest son of the 2nd Duke, predeceased his father without surviving issue
Edmund de la Pole, 3rd Duke of Suffolk, younger son of the 2nd Duke, was allowed to succeed as Duke in 1491, but had to surrender that title in 1493. His earldom was forfeit in 1504
Dukes of Suffolk, second Creation (1514)
Charles Brandon, 1st Duke of Suffolk was a favourite of Henry VIII
*Henry Brandon, 1st Earl of Lincoln, second son of the 1st Duke, predeceased his father, without issue. Younger brother of the above.
Henry Brandon, 2nd Duke of Suffolk, third son of the 1st Duke, died in his youth of sweating sickness. Half-brother of the two Henrys above.
Charles Brandon, 3rd Duke of Suffolk, 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.
Dukes of Suffolk, third Creation (1551)
Henry Grey, 1st Duke of Suffolk, 3rd Marquess of Dorset, married to a daughter of the 1st Duke and father ofLady Jane Grey. 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.