Khal Moro

From Asoiaf

Khal Moro is a Dothraki His son is Rhogoro

He and Rhogoro visited Pentos. They were at Khal Drogo's feast. Other people attending the feast were Viserys III Targaryen and his sister Daenerys Targaryen, Magister Illyrio Mopatis, the brother of the Archon of Tyrosh and Ser Jorah Mormont.