From A Wiki of Ice and Fire
An escutcheon is the shield-shaped surface normally used to display the heraldic design of a coat of arms. Most of the knights and noble houses of Westeros use "heater" shield-shaped escutcheons for their coats of arms. However, in Dorne round shields are preferred, and thus round-shaped coats of arms.
- ↑ Wikipedia: Escutcheon (heraldry)
- ↑ A Feast for Crows, Chapter 29, The Reaver.
- ↑ A Dance with Dragons, Chapter 48, Jaime I.
- ↑ A Storm of Swords, Chapter 38, Tyrion V.