Charles Brandon, 3rd Duke of Suffolk (12 October 1537  – 14 July 1551), known as Lord Charles Brandon until shortly before his death, was the son of the 1st Duke of Suffolk and the suo jure 12th Baroness Willoughby de Eresby.
His father had previously been married to Mary Tudor, sister of King Henry VIII. Following Mary's death, he had married Lady Willoughby de Eresby, who had been originally intended as the bride of his son Henry.
In 1541, Lord Charles Brandon and his older brother Lord Henry Brandon had their miniatures painted by Hans Holbein the Younger. 
He died of the sweating sickness one hour after the same disease claimed his elder brother Henry (who had succeeded their father as 2nd Duke of Suffolk in 1545), and because of this holds the record for the shortest tenure of a British peerage. (The 2nd Baron Stamp may claim a shorter tenure, but merely through a legal fiction.) Suffolk died without issue and his title became extinct. They died at the Bishop of Lincoln's Palace, Buckden, in the village of Buckden near Huntingdon, Huntingdonshire, where they had fled in an attempt to escape the epidemic.
A solemn celebration of the funerals of the two Dukes, called a 'Month's Mind', was held on 22 September 1551 with all the funeral equipment in duplicate.  The humanist intellectuals Thomas Wilson and Walter Haddon wrote a life of Suffolk and his older brother shortly after their death.
Mary Tudor was an English princess who was briefly Queen of France. She was the younger surviving daughter of King Henry VII of England and Elizabeth of York, and the third wife of King Louis XII of France, who was more than 30 years older than her.
Charles Brandon, 1st Duke of Suffolk, 1st Viscount Lisle, PC was an English military leader and courtier. Through his third wife, Mary Tudor, he was brother-in-law to King Henry VIII.
Duke of Suffolk is a title that has been created three times in the peerage of England.
Henry Grey, 1st Duke of Suffolk, 3rd Marquess of Dorset, was an English courtier and nobleman of the Tudor period. He was the father of Lady Jane Grey, known as "the Nine Days' Queen".
Lady Mary Keyes was the youngest daughter of Henry Grey, 1st Duke of Suffolk, and Frances Brandon, and through her mother had a claim on the crown of England.
Grimsthorpe Castle is a country house in Lincolnshire, England 4 miles (6.4 km) north-west of Bourne on the A151. It lies within a 3,000 acre (12 km²) park of rolling pastures, lakes, and woodland landscaped by Capability Brown. While Grimsthorpe is not a castle in the strict sense of the word, its character is massive and martial – the towers and outlying pavilions recalling the bastions of a great fortress in classical dress. Grimsthorpe has been the home of the de Eresby family since 1516. The present owner is Jane Heathcote-Drummond-Willoughby, 28th Baroness Willoughby de Eresby, granddaughter of Nancy Astor, who died at Grimsthorpe in 1964.
Frances Grey, Duchess of Suffolk, was an English noblewoman, the second child and eldest daughter of King Henry VIII's younger sister, Princess Mary, and Charles Brandon, 1st Duke of Suffolk. She was the mother of Lady Jane Grey, de facto Queen of England and Ireland from 10 July until 19 July 1553, as well as Lady Katherine Grey and Lady Mary Grey.
Henry Brandon, 1st Earl of Lincoln was the youngest child and second son born to Charles Brandon, 1st Duke of Suffolk and Mary Tudor, Queen of France, who was a daughter of Henry VII, King of England. Thus Henry Brandon was nephew to King Henry VIII. His older sisters were Lady Frances Brandon and Lady Eleanor Brandon.
Eleanor Clifford, Countess of Cumberland was the third child and second daughter of Charles Brandon, 1st Duke of Suffolk and Princess Mary Tudor, the Dowager Queen consort of France. She was a younger sister of Lady Frances Brandon and an elder sister of Henry Brandon, 1st Earl of Lincoln. She was also a younger paternal half-sister of Lady Anne Brandon and Lady Mary Brandon from her father's second marriage. After her mother's death in 1533, her father remarried to Catherine Willoughby and Eleanor became an elder half-sister of Henry Brandon, 2nd Duke of Suffolk and Charles Brandon, 3rd Duke of Suffolk.
Katherine Brandon, Duchess of Suffolk, suo jure12th Baroness Willoughby de Eresby, was an English noblewoman living at the courts of King Henry VIII, King Edward VI and Queen Elizabeth I. She was the fourth wife of Charles Brandon, 1st Duke of Suffolk, who acted as her legal guardian during his third marriage to Henry VIII's sister Mary. Her second husband was Richard Bertie, a member of her household. Following Charles Brandon's death in 1545, it was rumoured that King Henry had considered marrying Katherine as his seventh wife, while he was still married to his sixth wife, Catherine Parr, who was Katherine's close friend.
María de Salinas, Baroness Willoughby de Eresby was an English noblewoman and courtier from Spain. She was a confidante and lady-in-waiting to Catherine of Aragon, Queen of England.
William Willoughby, 11th Baron Willoughby de Eresby (1482–1526), was an English baron and the largest landowner in Lincolnshire.
Sir Christopher Willoughby, de jure10th Baron Willoughby de Eresby, was heir to his second cousin, Joan Welles, 9th Baroness Willoughby de Eresby, in her own right Lady Willoughby, as well as great-grandson and heir male to William Willoughby, 5th Baron Willoughby de Eresby. Christopher Willoughby was also heir to his elder brother, Robert Willoughby, who died unmarried and underage on 24 March 1467. He was unable to enjoy his inherited title as a result of the attainders of his cousin Joan Welles' father, Richard Welles, 7th Baron Welles, and brother, Robert Welles, 8th Baron Willoughby de Eresby.
Brandon is a surname. Notable persons with that surname include:
William Willoughby, 1st Baron Willoughby of Parham was an English nobleman and soldier who in 1547 was made an hereditary peer of the House of Lords.
Henry Brandon, 2nd Duke of Suffolk, styled Lord Henry Brandon before 1545, was an English nobleman, the son of Charles Brandon, 1st Duke of Suffolk, by his fourth wife, Catherine Willoughby.
Thomas Grey, 2nd Marquess of Dorset was an English peer, courtier, soldier, and landowner of the House of Grey.
Lady Anne Brandon, Baroness Grey of Powys was an English noblewoman, and the eldest daughter of Charles Brandon, 1st Duke of Suffolk by his second wife, Anne Browne. Anne's mother had died in 1511. In 1514, Anne's father secured a place for her at the court of Archduchess Margaret of Savoy. While Anne was abroad, her father married Mary Tudor, the widowed Queen consort of Louis XII of France and the youngest sister of Henry VIII.
Lady Mary Brandon was an English noblewoman, and the daughter of Charles Brandon, 1st Duke of Suffolk, by his second wife, Anne Browne. Mary was the wife of Thomas Stanley, 2nd Baron Monteagle, by whom she had six children.
Since William the Conqueror claimed the English throne, succession has been determined by bequest, battle, primogeniture, and parliament.
It was obvious by early October that the birth was imminent, and the courtiers were telling each other to 'look daily for a prince'. The King was so certain that his child would be a boy that he gave orders for a Garter Stall to be made ready in St George's Chapel for 'the Prince hoped for in due season'. On 7 October, as the Queen showed no signs of going into labour, the Lady Mary went briefly back to Hunsdon to attend the christening of the child of one of her tenants; when she returned, Jane was still up and about. In Leicestershire, at Bradgate Manor, the King's niece, Frances Brandon, Marchioness of Dorset, gave birth to a baby girl and named her after the Queen; this child grew up to be the ill-fated Lady Jane Grey, who would lose her head before her seventeenth birthday. And in London, the young Duchess of Suffolk bore a healthy son.