Maester Aemon passes away of old age aboard the ship heading to Oldtown long before the definitive truth of Jon Snow's royal parentage is officially uncovered and verified by Bran Stark and Samwell Tarly. However, during their time together at Castle Black on the Wall, Aemon expresses deep admiration for Jon, famously recognizing the profound loneliness of leadership and understanding the tragic burdens carried by the remaining members of his scattered royal family.