
Thirteen.
Vikings Season 1, Episode 3

Pyat Pree is one of the Thirteen.
Game of Thrones Season 2, Episode 5

- How old are you?
- Thirteen, Your Grace.
Game of Thrones Season 1, Episode 1

But we are the Thirteen,
Game of Thrones Season 2, Episode 4

HARALDSON: What age are you, boy?
Thirteen.
Vikings Season 1, Episode 3