|Overlord||House Baratheon of King's Landing|
During the Dance of the Dragons, the baseborn dragonseeds Addam and Alyn of Hull were legitimized as members of House Velaryon by the would-be Queen Rhaenyra Targaryen, as it was claimed by the mother of the boys, Marilda, that it had been Rhaenyra's first husband, Ser Laenor Velaryon, who had fathered them. The court fool Mushroom claimed they were actually the children of Laenor's father, Lord Corlys Velaryon, who hadn't dared to recognize the boys while his wife was alive, and choose to recognize them after a fashion in this way. The two boys were designated the true heirs of Driftmark, and carried the blood of old Valyria.
While Addam fell in the civil war, the dragon-scarred Alyn would go on to succeed his grandfather (or possible father) as Lord of Driftmark, Lord of the Tides, and head of House Velaryon. Dubbed "Oakenfist", he became very famous through his many deeds - among them fighting off Dalton Greyjoy, securing the release of Prince (and future King) Viserys Targaryen from Lys, making many great journeys far and wide, serving as Master of Ships under King Daeron I Targaryen, contributing greatly to the Conquest of Dorne, and fighting pirate lords, all before disappearing at sea.
Although he had children with his wife, Lady Baela Targaryen, Lord Alyn loved Princess Elaena Targaryen, the youngest daughter of King Aegon III Targaryen and Queen Daenaera Velaryon (Baela's own half-niece). They had two children, Jon and Jeyne Waters. It is unknown whether Lord Alyn ever knew about his bastards, or whether the children were born after he left on his final voyage, from which he never returned.
Despite his bastardy, Jon Waters went on to become a great and famous knight in his own right. His son, whose name is yet unknown, went on to become the same. As the son was the legitimate child of Ser Jon Waters and his wife, he left the taint of bastardy behind him, and added "Long" to his name to show this. One of their descendants, Rennifer Longwaters, would later serve his distant Baratheon kin as chief undergaoler of the dungeons below the Red Keep of King's Landing.
A Feast for Crows
Ser Jaime Lannister enquired into Rennifer Longwaters' role in the escape of Tyrion Lannister from the dungeons. Rennifer explained how the cells work, while boasting of his ancestry and how he had a "drop of dragon" in him. When Ser Jaime seeks out Ser Ilyn Payne before departing for the Riverlands, Rennifer lets Ser Jaime into Ser Ilyn's quarters.
House Longwaters at the end of the third century
The known Longwaters during the timespan of the events described on A Song of Ice and Fire are:
- Rennifer Longwaters, chief undergaoler of the Red Keep.
- Ser Jon Waters, the progenitor of the Longwaters line, bastard son of Lord Alyn Velaryon and Princess Elaena Targaryen, a great knight.
- Unnamed trueborn son of Jon Waters and his wife, who added "Long" to "Waters". A knight of fame, as his father before him.