Saint Cadwaladr was a 7th-century Welsh king and saint, known for his piety and leadership. He is often associated with the Kingdom of Gwynedd in Wales and is believed to have been a descendant of Saint Cynddylan. Cadwaladr is recognized for his efforts to spread Christianity in the region and is considered one of the last kings of the early Welsh kingdoms. He is commemorated on March 7th in the Catholic Church and the Anglican Communion. His legacy includes the establishment of churches and monasteries, contributing to the growth of the Christian faith in Britain. Cadwaladr's life reflects the intertwining of royalty and spirituality during the early medieval period.