When Jane became queen, in July 1553, they got into an argument about Guildford becoming king. Guildford claimed than he should be king, but Jane did not believe that Guildford had the qualities to become king. She said she would make him duke, but Guildford was unhappy. Guildford and his mother attempted to leave the Tower of London, but Jane had him brought back. Jane lost the throne on July 19 1553.