 In Roman Catholicism, the best known Saint Charles is Charles Borromeo (1538–1584), an Italian cardinal, canonized by Pope Paul V in 1606.Charles, Duke of Brittany (1319–1364) had been canonized after his death, but Pope Gregory XI annulled this.Charles the Good (d. 1127) is sometimes referred to as a saint, but while he was beatified in 1904, he has not been canonized.