|Title||Lady of Casterly Rock|
|Spouse||Lord Lyman Lannister|
The Sons of the Dragon (mentioned)|
Fire & Blood (mentioned)
Jocasta's husband, Lord Lyman Lannister, protected Prince Aegon and Princess Rhaena Targaryen during the early years of the reign of King Maegor I Targaryen, extending them guest right. During their stay at Casterly Rock, Jocasta first discerned that Rhaena was pregnant.