HEIR to the Iron Islands.
Game of Thrones Season 4, Episode 8
as long as I could still give him an HEIR.
Game of Thrones Season 6, Episode 5
Without Sansa,
you won't be able to produce an HEIR.
Game of Thrones Season 6, Episode 1
The King must have an HEIR
Game of Thrones Season 6, Episode 7
Jaime is your eldest son,
HEIR to your lands and titles.
Game of Thrones Season 3, Episode 1