 Queen Constance died first on 18 November 1313, followed by Infantes John and Peter during a military campaign against Granada in 1319, which left Dowager Queen María as the only regent until her death on 1 July 1321.After the death of the infantes John and Peter in 1319, Philip (son of Sancho IV and María de Molina, thus brother of Infante Peter), Juan Manuel (the king's second-degree uncle by virtue of being Ferdinand III's grandson) and Juan the One-eyed (his second degree uncle, son of John of Castile who died in 1319) split the kingdom among themselves according to their aspirations for regency, even as it was being looted by moors and the rebellious nobility.His effective reign began in August 1325 when he was sworn in as King as he was proclaimed to have reached the age of majority in the Cortes of Valladolid.