Catherine of Aragon
At first, Henry tried to convince Anne Boleyn to be his mistress in 1527. Anne refused, so Henry decided to marry her. Divorce was not allowed in the Catholic faith. Henry claimed that, as Catherine had been married to his elder brother Arthur, his was an invalid marriage. He quoted a verse in Leviticus which states that "a man may not marry his brother's wife and such a union would be without the blessing of God and fruitless", and used this as his case. It became referred to as the kings "Great Matter" and a special court was held with Cardinal Wolsey leading it.