- "Ser Damon Morrigen proposed a trial by seven. Ser Damon and six of the Faith Militant against the king and his six champions."
- ―The High Sparrow
Ser Damon was a knight of House Morrigen and a devotee of the Faith Militant who commanded the order's chapter in King's Landing. When newly-crowned King Maegor Targaryen returned to King's Landing, he challenged the Faith Militant to a Trial by combat to prove his right to rule. They accepted, and the resulting trial of seven pitted Maegor and six of his Kingsguard against Ser Damon and six other champions of the Faith Militant. The tales about the resulting confrontation are many, but by the end, of the fourteen men who entered the field only Maegor was left alive.
In the books
In the A Song of Ice and Fire novels, Ser Damon Morrien is the commander of the Warrior's Sons - one of two military orders that comprises the Faith Militant. In the TV show the Faith Militant is condensed into a single order.