Who was aemon targaryen?

Ah, an excellent question. Maester Aemon was quite a remarkable figure. He was the wise, blind maester serving the Night's Watch at Castle Black. What is most fascinating, indeed, is his bloodline. He was a true Targaryen prince who renounced his claim to the Iron Throne. He chose a life of service to avoid political conflict. This made him a trusted mentor to Jon Snow, and the great-uncle of Daenerys Targaryen. A life defined by duty, not power.