Aelinor Targaryen

Aelinor Targaryen is an unseen character in Game of Thrones. She is not expected to appear in the series, being long dead by the time it begins.

Background
Aelinor Targaryen was the only daughter of King Daeron the Good and Queen Myriah. Per the Targaryen tradition, she married her brother, King Aerys. His other brothers were Baelor, Rhaegel, and Maekar.

Season 1
Alinor, along with her brothers, is mentioned in the House Targaryen's entry of the book The Lineage and Histories of the Great Houses of the Seven Kingdoms.

In the books
In the A Song of Ice and Fire novels, Queen Aelinor died a maid, allegedly, and childless, as King Aerys shunned her bed and was more fond of his books and lore.