lindo 's reference , in the passage from the cottage of lost play cited above , to the faring forth of the eldar of tol eressea 'to find the lost families of the kindred ' must likewise relate to the mentions in ( 5 ) of the faring forth ( though the time was not ripe ) , of the 'rising of the lost elves against the orcs and nautar ' , and of 'the island-elves and the lost elves ' at the battle of ros .