| Timeline of Key Dates | Timeline of Catherine Howard Key events |
| 1521 | Catherine Howard was born |
| 1530 | Her mother died and she was sent to live at the household of Agnes, the Dowager Duchess of Norfolk |
| 1533 | The coronation of her cousin Anne Boleyn to King Henry VIII of England |
| 1533 | Catherine started a relationship with her music teacher - Henry Maddox. The affair ended when it was discovered by the Dowager Duchess |
| 1536 | Catherine Howard started a relationship with Francis Dereham. The relationship ended when Catherine Howard left the household |
| 1539 | Catherine Howard was sent by her uncle, the Duke of Norfolk, to the court of Henry VIII as lady-in-waiting for his proposed new German wife, Queen Anne of Cleves |
| 1540 January 6 | The wedding between Henry VIII and Anne of Cleves |
| 1540 | Catherine Howard caught the eye of King Henry VIII and soon became his mistress |
| 1540 July 9 | English Parliament declared the marriage between Henry VIII and Anne of Cleves as null and void |
| 1540 July 28 | Catherine Howard married Henry VIII at Oatlands Palace in Surrey |
| 1540 Winter | Catherine Howard met, fell in love and started a relationship with Thomas Culpepper |
| 1541 Spring | Rumours of the relationship between the young Queen Catherine Howard and Thomas Culpepper started to circulate |
| 1541 Summer | Archbishop of Canterbury Thomas Cramner built a case against the young Catholic Queen based on Catherine Howard's previous involvements and her current relationship with Thomas Culpepper |
| 1541 Autumn | Catherine Howard was arrested and imprisoned and interrogated in an abbey in Middlesex |
| 1541 December 8 | Thomas Culpeper and Francis Dereham were executed at Tyburn |
| 1542 January | Queen Catherine's case was brought before parliament in January |
| 1542 February 10 | Catherine Howard was taken to the Tower of London |
| 1542 February 13th | Catherine Howard was executed for adultery |
