In 1605, on a voyage by sea from Marseilles to Narbonne, he fell into the hands of African pirates and was carried as a slave to Tunis. His captivity lasted about two years, until Divine Providence enabled him to effect his escape. After a brief visit to Rome he returned to France, where he became preceptor in the family of Emmanuel de Gondy, Count of Goigny, and General of the galleys of France. In 1617, he began to preach missions, and in 1625, he lay the foundations of a congregation which afterward became the Congregation of the Mission or Lazarists, so named on account of the Prioryof St. Lazarus, which the Fathers began to occupy in 1633.
Of course, there's a lot more to his story, all of which makes great, memorable reading for children (and the rest of us).