- "Ki jini anha astak asqoy, anha, Drogo ki Bharbosi.
(This I vow: Drogo, son of Bharbo...)"
Bharbo was a Dothraki Khal and the father of Khal Drogo.
Bharbo was a revered Khal amongst the Dothraki. He is the father of Drogo.
Rakharo tells Ser Jorah Mormont that his father was a bloodrider to Khal Bharbo and was a great warrior. When Khal Drogo vows to cross the Narrow Sea and conquer the Seven Kingdoms in response to the attempted assassination of his pregnant wife, Daenerys Targaryen, he swears by his father's name.
Bharbo is briefly mentioned when Daenerys is taken before Khal Moro - again specifically in reference to his son as "Drogo, son of Bharbo".
In the books
In the A Song of Ice and Fire novels, Bharbo is mentioned in the same way as in the TV series; Drogo refers to him when swearing to retake the Iron Throne for Daenerys and for their son Rhaego.