Marriage of Henry VIII and Anne Boleyn
Henry was very much attracted by Anne’s charm and wit. To be able to marry her, Henry wanted to divorce his first wife Katherine of Aragon, to whom he had been married for 24 years. This meant he also had to break with the Church of Rome, who did not accept his reasons for a divorce. Their marriage was only annulled on 23 May 1533, when Thomas Cranmer declared it null and void. On 28 May 1533 he declared the marriage of Henry VIII and Anne Boleyn valid.
However, as Anne did not produce the looked-for male heir, after approx. 1000 days of marriage, Henry ordered Anne’s execution.
You might find Suzannah Lipscomb‘s article on this marriage of interest.