|Title||Lord of Tarbeck Hall|
|Died||In 43 AC, the Gods Eye|
|Spouse||Lady Jeyne Westerling|
After declaring his uncle Maegor I Targaryen a usurper and a tyrant, Prince Aegon the Uncrowned gathered his supporters at Pinkmaiden Castle in the riverlands. Lord Alyn Tarbeck was one of the several lords from the westerlands to join Aegon's cause. However, Lord Alyn died with the rebels at the Battle Beneath the Gods Eye in 43 AC, slain by Maegor's loyalists alongside the prince.
Alyn had one posthumous son with his lady wife, Jeyne Westerling. His son followed him as Lord of Tarbeck Hall. His relation with Jocasta Tarbeck, the wife of his liege lord, Lyman Lannister of Casterly Rock, is unknown.