Mormont himself chose Jon to be his STEWARD.
Game of Thrones Season 5, Episode 2
There's honor in being a STEWARD.
Game of Thrones Season 1, Episode 7
Not his STEWARD...
Game of Thrones Season 1, Episode 7
Your STEWARD.
Game of Thrones Season 2, Episode 1
made that man his STEWARD.
Game of Thrones Season 6, Episode 7