TV series example of the word

Game of Thrones Season 4, Episode 8
eldest daughter of Lord Eddard Stark.

Game of Thrones Season 2, Episode 2
Your sister took over command of your eldest brother's ship

Game of Thrones Season 2, Episode 1
He loved the eldest daughter.

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.