Question: Who was the mother of dragons married to?
Disambiguated questions and answers: question: Who was the mother of dragons first married to?
Who was the mother of dragons married to second?
answer: Khal Drogo
Drogo
Hizdahr zo Loraq
question: What leader of Dothraki is the mother of dragons married to?
What Ghiscari noble is the mother of dragons married to?
answer: Khal Drogo
Hizdahr zo Loraq
Natural Questions answer: Dothraki horselord Khal Drogo (from the Wikipedia article "Daenerys Targaryen")