1517

• 17TH FEBRUARY Henry Grey was born the the son and heir of Thomas Grey, 2nd Marquess of Dorset by his wife Margaret Wotton

1520

• JUNE Henry's father Thomas Grey, 2nd Marquess of Dorset was at the Field of Cloth of Gold,

1523

• Lord John Grey Henry's brother was born.

1526

• Lord Thomas Grey, Henry's brother is born.

1528

• Henry's father Thomas Grey, 2nd Marquess of Dorset constable of Warwick Castle,

1529

• Henry's father, Thomas Grey, 2nd Marquess of Dorset was recalled his role as 'chief answerer' at the marriage of Arthur, Prince of Wales, Dorset was a critical witness in favour of Henry VIII's divorce of Catherine of Aragon. He strongly supported the King's contention that Arthur and Catherines marriage had been consummated

1530

• Henry was betrothed to Catherine FitzAlan, the daughter of William FitzAlan, 18th Earl of Arundel, whom he later refused to marry.

• 10TH OCTOBER Henry's father Thomas Grey, 2nd Marquess of Dorset died

• Henry became the 3rd Marquess of Dorset

1532

• 1ST MAY Henry's sister Katherine Grey died

1533

• 1ST JUNE Henry was the king's sword-bearer at Anne Boleyn's coronation

• By the permission of King Henry VIII he married Lady Frances Brandon at Suffolk Place, a mansion which belonged to Francis parents on the west side of Borough High Street in Southwark, .

• 20TH JULY The Funeral of Henry's mother-in-law Mary Tudor Queen dowager of France. A delegation from France joined the English delegation for the lavish funeral ceremony. Frances Henry's wife was chief mourner, accompanied by her husband Henry and siblings. Anne and Mary, Francis half-siblings from her father' Charles Brandon's first marriage.pushed themselves to the head of the funeral cortege just before the coffin was lowered into the crypt of the Abbey of St Edmundsbury, much to the consternation of their half-siblings

• 10TH SEPTEMBER Henry's mother Margaret Wotton, Marchioness of Dorset was Godmother to the Princess Elizabeth. (The daughter of Anne Boleyn and King Henry VIII of England) Henry was present .

1537

• 12TH OCTOBER Henry's daughter by his wife Francis, Lady Jane Grey is born. at Bradgate Park in Leicestershire

1540

• Henry was present for Anne of Cleves arrival

• 25TH AUGUST Henry's daughter by his wife Francis, Lady Katherine Grey is born at Bradgate Park, near Leicester

1541

• Bishop John Aylmer was made chaplain to the Henry and tutor of Greek to his daughter, Lady Jane Grey

• Henry's mother Margaret Wotton, Marchioness of Dorset died.

1544

• 19TH JULY Henry was present at the Siege of Boulogne Part of the Italian War of 1542 Location Boulogne, on the French coast of the English Channel Result English victory. Henry's father-in-law Charles Brandon' was present .

1545

• Henry's daughter by his wife Francis,Lady Mary Grey is born

1546

• Blackfriars Leicester was granted to Henry.

1547

• 28TH JANUARY King Henry VIII of England is dead and now his son Edward VI is King of all England

• 3RD FEBRUARY Henry was also chief mourner at the funeral of  Henry VIII

• 20TH FEBRUARY The coronation of King Edward VI. Henry was created lord high constable of England for three days (17 to 20 Feb.) to superintend the young king's coronation.

• Henry became the Order of the Garter.

• FEBRUARY The Lady Jane Grey, Henry's daughter was sent to live in the Household of Catherine Parr, now Queen Dowager

• Henry returned home to Bradgate after out of favor with the leader of King Edward VI government, Edward Seymour.

1548

• 5TH SEPTEMBER Henry's daughter The Lady Jane Grey returned home after the death of Catherine Parr However Thomas Seymour, on the other hand, pressed the Henry with demands that he held Jane's wardshipand she should be returned to his household. Jane returned to Seymour's household and moved into Catherine Parrs apartments.

• Funeral Catherine Parr Lady Jane acted as chief mourner at the funeral;

• Henry's sister Anne Grey died.

1549

• OCTOBER When John Dudley, Earl of Warwick, overthrew the Protectorship (Edward Seymour) and secured power by appointing loyal friends to the Privy Council. Grey joined the Council as a part of this group.

• Henry is made Lord Lieutenant of Leicestershire 1549–1551 & again 1552–1554

1551

• 11TH OCTOBER Henry was created Duke of Suffolk

• Heinrich Bullinger dedicated a book Henry.

1552

• AUGUST Henry's daughter Katherine Grey was now betrothed to Lord Herbert

1553

• 25TH MAY Henry's daughter Lady Jane Grey had been married the Duke of Northumberland's son, Lord Guildford Dudley at Durham House. Henry's other daughter Lady Katherine was married to Henry, Lord Herbert The Lady Katharine's marriage was annulled the following year. Mary Grey, Henry's youngest daughter got betrothed to her distant cousin Arthur Grey, 14th Baron Grey de Wilton

• 6TH JULY King Edward VI is dead

• Three days later Henry and John Dudley the Duke of Northumberland, and other members of the Privy Council proclaimed Jane queen

• 10TH JULY Henry's daughter the Lady Jane Grey is Queen for nine days in England.

• 14TH JULY The Duke Northumberland. At this point marched out of London with three thousand men, reaching Cambridge the next day;

• Mary Tudor rallied her forces at Framlingham Castle in

  Suffolk, gathering an army of nearly twenty thousand

• 19TH JULY The Lady Jane Grey is now deposed and kept imprisoned in the Tower of London. Now Mary Tudor is Queen of All England.

• Henry was arrested but released days later thanks to the Duchess' intervention

• 22ND AUGUST John Dudley, the Duke of Northumberland is executed for high treason at Tower Hill.

• 13TH NOVEMBER The trial of Henry's daughter the Lady Jane Grey at Guildhall in the City of London. Jane was charged with high treason, as were her husband, two of his brothers, and the former Archbishop of Canterbury, Thomas Cranmer . The commission was chaired by Sir Thomas White, Lord Mayor of London, and Thomas Howard, 3rd Duke of Norfolk.

1554

• 25TH JANUARY The Thomas Wyatt Rebellion. This was in response to Queen Mary 's Catholic choice in Spanish Marriage with Philip of Spain. Henry had joined the rebellion, b. Henry had proved more determined, but only managed to raise a force of 140 rebels, many of whom were his own men. He was refused entry to Coventry, and gave himself up when captured by Francis Hastings, 2nd Earl of Huntingdon. The revolt had failed by February. This sealed the fate of The Lady Jane Grey.

• 12TH FEBRUARY The execution of the Lady Jane Grey and her husband Guildford Dudley in Tower London.

• 23RD FEBRUARY Henry Grey is executed on Tower Hill for treason along with his younger brother Lord Thomas Grey