A people of the Silvan Elves, with whom had mingled a group of Sindar. They dwelt under the trees of Mirkwood, and during the Third Age, their leader was Thranduil son of Oropher. In the northeast of the Wood, Thranduil delved an underground dwelling after the manner of his ancient kinsman Thingol at Menegroth. There the Elves of Thranduil lived in relative safety until the time of the War of the Ring. Prominent among this people was Legolas Greenleaf, who travelled with the Company of the Ring.