Thomas is believed to have been born in the castle of Roccasecca in the old county of the Kingdom of Sicily, which is now known as the Lazio region of Italy, in 1225. His parents were well-off, but as the youngest son Thomas was expected to enter the monastery.
At 5-years-old, Thomas began his education at Monte Cassino, where he remained until the military conflict between Emperor Frederick II and Pope Gregory IX reached the abbey. He was then transferred and enrolled at the studium generale …