I went down the rabbit hole reading about the incident when that happened, pretty interesting.
He didn't just rescue the shipwrecked kids and move on, he was treated as a hero in Tonga, the king of Tonga asked him what we wanted as a reward and he asked for fishing rights in an area he had been denied before and it was granted, he lived in Tonga for 30 years after that.
He was involved in a second shipwreck rescue of a yacht named the Sospan Fach. The member of his crew that spotted the second shipwreck was Sione Filipe Totau. Sione was one of the boys rescued from the first shipwreck.