Fire & Blood (mentioned)|
Laena was born while her father, Lord Alyn Velaryon, was on his voyage to the Iron Islands and then Lys. Alyn first met his daughter when he returned to King's Landing with the previously-missing Prince Viserys Targaryen.
Laena had been presented a dragon egg upon her birth. At Driftmark in 135AC, it hatched a blind and wingless wyrm, white as a maggot. After the monster tore a bloody chunk from young Laena's arm, Alyn Oakenfist hacked it to pieces.