The Years is 179 AL.
Dark wings, dark words. A common saying in Westeros, the raven while used by the maesters to communicate between the various houses, are also one of the most common ways of hearing of bad news, the death of a kinsman, the loss of lands, the summoning of a King. Whatever the contents of that letter, you never learned them. You were summoned by the Lord of the house, one of the great houses of Westeros, and send to King’s Landing with a retinue. You were to present yourself to King Aegon IV, an envoy of the house, what would happen once that part was done, none could tell.