The Affair with John of Gaunt

Catherine’s most significant and controversial relationship was with John of Gaunt, the Duke of Lancaster, the third son of King Edward III. At the time, John was a powerful figure in England, one of the wealthiest and most influential men of the period. He was also a widower, having been married to Blanche of Lancaster, who had died in 1369.

Catherine and John first became acquainted when she was employed as a governess to the children of John’s first marriage. The two formed a close bond, and their relationship quickly blossomed into a passionate and enduring affair. Though John was married to Constance of Castile, the couple’s relationship had grown distant. Catherine, being well-educated and of great personal charm, captured his heart.

The affair between Catherine and John of Gaunt lasted for many years, during which time they had several children together. This long-standing relationship was kept mostly secret, and Catherine was not the only mistress of John’s. However, what set her apart from the other women was her intelligence, grace, and the genuine love that existed between them.

The Scandal and Consequences


In medieval England, the affair between John and Catherine was scandalous. John, a powerful nobleman, could not afford to tarnish his reputation with a public liaison outside of marriage. Nonetheless, the affair persisted for more than a decade, and their love story became one of the most talked-about of the time.

In 1396, following the death of John’s second wife, Constance of Castile, John of Gaunt sought a diplomatic marriage with the daughter of the King of Castile, but he ultimately married Catherine Swynford in a secret ceremony. The marriage was not without controversy. As a widow and a commoner, Catherine’s union with John was seen by many as an affront to his noble status. The marriage, however, was recognized by the Church, and their children were granted legitimacy. shutdown123

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