At the early age of sixteen he attained one of the highest dignities of the order, being made grand prior of France.
In vain the pope tried to bribe him with promises and dignities; he was determined to stand by his subjects, and was crowned king by the nobles at Palermo in 1296.
But it is more probable that Cesare, who contemplated exchanging his ecclesiastical dignities for a secular career, regarded his brother's splendid position with envy, and was determined to enjoy the whole of his father's favours.
Valladolid was then the capital, and in due course eminent dignities were offered to him, but he gave signs of a determination to lead the sinple life of a Friar Preacher.
An act of 1627, one of several such aimed at aggrandizing families by diverting the descent of dignities in fee from heirs general, entailed the earldom and castle of Arundel upon Thomas, earl of Arundel and Surrey and the heirs male of his body "and for default of such issue, to the heirs of his body."