Sauron was called Gorthaur in the good old days.

Just to keep things rolling:
Who was the chief counsellor of Rivendell?
Who was the first High Elf that Sam met?
Who gave Pippin his first real meal in Minas Tirith?
Who made the prophesy that the king of the ringwraiths would not be slain by a man?
Who was the brother of Gwaihir the Windlord?
Over what land did the Witch-king rule when he first gained fame?
Who was Gollum's childhood friend?

JP