Jorah Mormont

Ser Jorah Mormont is a character in Game of Thrones. He is played by Iain Glen and appears in the first episode.

Jorah Mormont is a knight from Westeros, exiled from his homeland and fled into exile in the Free Cities. Whilst in Pentos he became known to Magisery Illyrio Mopatis and was invited to the wedding of Princess Daenerys Targaryen to Khal Drogo of the Dothraki.

In the books
In the Song of Ice and Fire novels, Jorah is the son of Lord Jeor Mormont of Bear Island, a vassal house of the Starks. With a strong, vigorous son ready to take over the lordship, Jeor decided to join the Night's Watch and rapidly rose to the rank of Lord Commander, leaving Jorah as Lord of Bear Island. However, Jorah disgraced himself through behaviour unbefitting a lord. Learning that Eddard Stark was on his way to dispense the King's Justice, Jorah fled to the eastern continent, leaving his aunt Maege to become the ruling Lady of Bear Island.