|Died||In 1–9 AC|
The Celtigars were closely allied with House Targaryen of Dragonstone and House Velaryon of Driftmark, families of Valyrian descent. Lord Crispian was a vassal of the Targaryens and joined his strength to Lord Aegon Targaryen when he sought to conquer the Seven Kingdoms of Westeros.
After Aegon was crowned as King of All Westeros, he established the first small council and Crispian was named the first master of coin. In that office, he advised Aegon on matters relating to taxation, debts, and incomes.