Baron Gareth Gwynnett was a powerful Thannish ruler of Gwyn-Haro, who, in the late Third Age, conquered much of the eastern Heartlands.
After he assumed rulership of the Barony, Gareth soon established himself as a ruthless warlord with a taste for conquest. During his lifetime, his armies expanded his territory, eventually capturing the neighboring Ashanti city of "A'Shorah."
Gareth was also quite cruel. After his victory, he ordered thousands of Ashanti either killed or exiled into the foothills of the Frostcrown Mountains. Gareth also ordered the Temple of Na'Drak torn down and used its ruins for the foundation of his new Castle. Overtime, a settlement grew up around the new castle, which was called "Ashara," a Thannish bastardization of the Ashanti name A'Shorah.
After his death, the House of Gwynnett continued to rule Gwyn-Haro for many years until they were defeated by Valden the Conqueror.