Calpornius and his wife were so ardent in religion that they spent day and night in teaching their son the story of the gospel and the psalms. They desired first of all that he should be a good Christian and a bearer of the faith--but they wearied the growing boy with long hours of study and monotonous recitals of religious hymns and proverbs when he was eager to be ranging the hills or playing with his fellows. At that time he had no particular desire to be a priest, and, like most boys, was far more interested in the stories of heroes than the stories of saints, preferring to hear of the wild Scottish chiefs and the Roman Generals with whom they had engaged in bitter warfare.
He thirsted for adventure, and adventure was to come to him. Those were wild days, and law only reached as far as it could be upheld by the sword and the arrow. Pirates harried the seas and from the north the galleys of the sea robbers were soon to range southward in search of lands where plunder was to be found and men and women to be carried into slavery.
One night, when a gale was blowing from the northeast, St. Patrick, we are told, sat with some friends in the glowing light of a great peat fire, where they warmed themselves at the same time that they told stories of adventure and sang Scottish songs as wild and melancholy as the wind that was scouring the hills. Saint Patrick was now a lad of sixteen, with well knit limbs and a powerful body that made him appear older than he really was, and at the same time gave promise of greater strength to come. He listened keenly to the singing, but at the same time gave ear to sounds that he heard without the hut, for the rough voices of men speaking an unknown tongue seemed to be mingling with the noise of the storm. At last he sprang up with a shout of warning, a shout that was answered by a battle cry from without. A pirate galley had made its way to the shore and the crew were engaged on a raid to capture slaves. Some of Saint Patrick's companions were clubbed or cut down where they sat, but he was thrown and strongly bound, dragged roughly to the shore and tossed on board the robber craft that quickly made its way to sea in spite of the tremendous surf that broke over the backs of the oarsmen.