 After Edward 's death on 6 July 1553 Northumberland undertook the enforcement of the King 's will . Lady Jane Grey accepted the Crown only after <unk> by her parents and parents @-@ in @-@ law . On 10 July the Duchess of Northumberland accompanied her son and daughter @-@ in @-@ law on their ceremonial entry into the Tower of London , where they were to reside for the rest of the short reign . According to Jane 's own <unk> letter to Queen Mary a few months later , Guildford now wanted to be made king . The young people agreed on having him declared king by Act of Parliament ; but then Jane changed her mind and declared she would only make him a duke . " I will not be a duke , I will be King " , Guildford replied and went to fetch his mother . Furious , the Duchess took the side of her son , before she told him to leave the Tower and go home . Jane , however , insisted that he remain at court . According to her the Duchess also " induced her son not to sleep with me any more " , and it is clear from her writings that Jane disliked her mother @-@ in @-@ law . 
