Ser Terrence was regarded as tall, dark and handsome.
Ser Terrence was found abed with one of King Aegon the Unworthy's mistresses. Even though they proclaimed love, Aegon had them executed. Toyne was dismembered piece by piece, while the mistress was forced to watch before meeting her own death. Ser Terrence's brothers attempted to avenge him by killing King Aegon, but were stopped by Prince Aemon the Dragonknight who died defending him instead. They paid for their treason with their lives and in turn this event was key in the downfall of House Toyne.