One of his uncles was the powerful William de Croÿ, Lord of Chièvres, a leading adviser to the future Holy Roman Emperor, Charles of Ghent.
However, the seventeen-year-old Charles's biggest influence was still the Lord of Chièvres, who maneuvered his twenty-year-old nephew into the Archbishopric, making him primate of Spain and chancellor of Castile.
[4] The representatives at the Cortes of Valladolid in 1518 presented petitions protesting the act, demanding that no further foreigners be granted naturalization writs and that Croÿ reside in his see.
[5] After a funeral service in Worms on 21 January,[2] his body was transported to the Low Countries and buried in the church of the Celestines in Heverlee, a community that his father had founded.
Antonio Osorio de Acuña, bishop of Zamora and comunero rebel, dropped his campaign in the North of Castile around Palencia to head south to Toledo and attempt to succeed William as archbishop.
Diego López Pacheco, the Marquis of Villena, had been one of the very few nobles to support his appointment, likely in an attempt to gain the elder Croÿ's favor.
[6] A contemporary account by Alonso de Santa Cruz, historiographer royal to King Philip II, said that "it was a just judgment of God that neither did Croy enjoy the archbishopric nor was the Marquis restored.