 In July 1437, both parties signed a treaty, one of the terms being that Armagnac would not allow his subjects to act with hostility towards the English.In 1442, negotiations started for a marriage between King Henry VI of England and one of John's daughters.Armagnac was anxious for a strong alliance which would protect him from threats by Charles VII, while the English were looking forward to being able to use his lands as a defensive buffer zone against French attacks.