"And now they stood together, Peter and the boys from St. Norbert's."
The Lost Boys were originally orphans from St. Norbert's Home for Wayward Boys. Peter(Pan) is their leader because he was the oldest.
In Peter and the Starcatchers, Peter and the(first) Lost Boys, James, Thomas, Prentiss, and Tubby Ted remain on Mollusk Island, which they rename Neverland, the name of the ship that was shipwrecked.
In Peter and the Secret of Rundoon, the Lost Boys (James, Thomas, Prentiss, and Tubby Ted) decided to return to London, while some new boys(Slightly, Cubby, Tootles, Nibs, Curly and the Twins), former St. Norbert's orphans enslaved by Zarboff, decide to take their place as new Lost Boys (for now at least).