In the city of Lisbon, of which St. Anthony was a native, whilst his relatives were still living, that is to say his father, his mother and his brothers, two citizens were enemies and they hated each other to death. It so happened that the son of one of them, a young boy, encountered the enemy of the family, who lived near blessed Anthony's parents.

This merciless man grabbed the boy, took him home and killed him without further ado. Then, in the deep of the night, having entered into the garden of the Saint's parents, he dug a ditch, buried the body and fled.

As the young boy was the son of a well known family, there was an inquest into his disappearance, and it was ascertained that the young boy had travelled through the enemy's part of town. The home and garden were therefore searched, but no clues were found. While carrying out an inspection of the garden of blessed Anthony's relatives, the boy was found, buried in the garden. For this reason, the king's executioner arrested Anthony's father and everyone else in the house, for the assassination of the boy.

Blessed Anthony, even though he was in Padua, came to know this fact through divine inspiration. That night, having obtained permission, he left the convent. While he walked during the night, he was transported miraculously to the city of Lisbon. Upon entering the city in the morning, he went to the executioner, and began to plead with him to acquit these innocent people of the accusation and set them free. But, as the man had no intention of doing such a thing, blessed Anthony ordered that the assassinated boy brought to him.

Once the body was placed before him, he ordered the boy to rise up and say whether his relatives had killed him. The boy awoke from death and affirmed that blessed Anthony's relatives were not involved. As a result, they were exonerated and released from prison. Blessed Anthony stayed with them all day. Then, in the evening, he left Lisbon and the following morning he found himself in Padua (Bartolomeo da Pisa 4,19-32).