Catherine lived in the king's household, presumably so she could care for her young son, but the arrangement also enabled the councillors to watch over the queen dowager herself. Nevertheless, Catherine entered into a sexual relationship with Welshman Owen Maredudd Tudor, who, in 1421, in France, had been in the service of Henry V's steward Sir Walter Hungerford. Tudor was probably appointed keeper of Catherine's household or wardrobe. The relationship began when Catherine lived at Windsor Castle, and she became pregnant with their first child there. At some point, she stopped living in the King's household and in May 1432 Parliament granted Owen the rights of an Englishman. This was important because of Henry IV's laws limiting the rights of Welshmen.