You were the other child of the king and queen, Zelda was your sister and therefore too precious to be sent on diplomatic missions. So you were the one sent to try and make a peace treaty with Ganon so he would stop the attacks on the Hylian people, as you were now kneeling before him in the throne room

“State your business hylian. I have no time for beating around the bush, even for someone as intriguing as yourself.”