The Great Bastards were the noble-born natural children of King Aegon IV Targaryen by several of his mistresses. As with all of his other bastard children, King Aegon IV legitimized the Great Bastards on his deathbed in 184 AL. At present, there are four known Great Bastards.
Natural son of King Aegon IV by his cousin, Princess Daena Targaryen. Born in 170 AL.
Natural son of King Aegon IV by his fourth mistress, Lady Barba Bracken. Born in 172 AL.
Natural son of King Aegon IV by his fifth mistress, Lady Mylessa Blackwood. Born in 175 AL.
Natural daughter of King Aegon IV by his ninth mistress, Lady Syrenei of Lys. Date of birth unknown.