Tyene Sand

Tyene Sand is an unseen character in the fourth season. She is first mentioned in "First of His Name".

Background
Tyene Sand is the third of the eight bastard daughters of Prince Oberyn Martell.

Season 4
Oberyn mentions his eight bastard daughters to Queen Cersei.

In the books
In the A Song of Ice and Fire novels, Tyene is Oberyn's daughter whom he fathered on a septa.

Tyene is regarded as treacherous, while maintaining a sweet and pious persona. She is fair, with golden hair, blue eyes and an almost otherworldly innocence about her. She has soft pale hands but they are as deadly as her sister Obara's callused ones, if not more so. She shares her father's knowledge of poisons and it is her chosen weapon.

When Tyene was in the cradle her mother read to her from the Seven-Pointed Star. Her cousin Princess Arianne Martell once crossed the Mander with three of the Sand Snakes to visit Tyene's mother.

Tyene and Arianne once fled Sunspear to try to marry Arianne to Willas Tyrell at Highgarden, but they were caught by Tyene's father, Oberyn Martell, at Vaith.