From A Wiki of Ice and Fire
The Lioness is one of Cersei's dromonds in service to House Baratheon of King's Landing. It is named after the Lannisters of Casterly Rock, possibly Queen Cersei Lannister in particular.
A Feast for Crows
The Lioness is among the ships being built as part of Queen Cersei Lannister's plan to increase the size of the royal fleet instead of relying on the traditional sea powers to protect the crown's interests. During her imprisonment by the Faith of the Seven, Cersei is visited by Qyburn, who tells the queen that Aurane Waters fled King's Landing with the new ships after her arrest.
- ↑ 1.0 1.1 A Feast for Crows, Chapter 28, Cersei VI.
- ↑ A Feast for Crows, Chapter 43, Cersei X.