Roheryn

The steed of Aragorn

The horse of Aragorn, brought to him out of the north by the Rangers during the War of the Ring, and said to have been a gift from the lady Arwen Evenstar.

1	We know almost nothing about Roheryn's lifetime before the War of the Ring, but it is clear that the horse was stabled somewhere in the northern lands of Middle-earth. Given the connections with both the Dúnedain and with Arwen, it seems reasonable to speculate that Rohyern would have been kept at Rivendell when not being ridden by Aragorn.
2	This horse's name comes from Sindarin roch 'horse' and heryn 'lady', so the name in full means 'horse of the Lady'. The Lady in question was Aragorn's betrothed, Arwen the Lady of Rivendell, who had given Aragorn the horse as a gift.