St Landelin of Crespin lived for a time as a highway bandit, but repented and became a Benedictine monk. He founded several monasteries in France and Belgium. He was also the spiritual director of two other saints! He died in 686.
Fr. Anthony Casamento
Fr Anthony is a priest of the Congregation of St Michael the Archangel, and is currently the Director of Identity and Mission at the Australian Catholic University.