TV series example of the word

Breaking Bad Season 2, Episode 4
You've decided to, oh, I don't know, make your eldest son homeless?

Game of Thrones Season 3, Episode 9
My eldest granddaughters Ginia and Neila.

Game of Thrones Season 5, Episode 3
You're Sansa Stark, eldest surviving child of Ned and Catelyn Stark.

Game of Thrones Season 5, Episode 7
I'm Lord Bolton's eldest son.

Game of Thrones Season 5, Episode 2
Our eldest child murdered at his own wedding.