|In 9 AC
Ser Quenton was the master-at-arms at Dragonstone during Aegon's Conquest.[N 1] He was named Lord of Harrenhal by King Aegon I Targaryen after Aegon had extinguished House Hoare during his conquest. Lord Quenton had two strong sons and a plump grandson to continue the family line, but as his first wife had died from spotted fever in 1 BC, he agreed to wed a daughter of his liege lord, Edmyn Tully of Riverrun. In 9 AC, he died from a fall from his horse and was succeeded by his grandson, Gargon.
- Quenton was an older man as he already had a grandson at the time. However, it is unknown since when he held that position in the Targaryen household. It is possible he was the one to train at arms the trio of Conquerors and their half-brother, Orys Baratheon, in their youths.