Was he the one on guard DUTY?
Game of Thrones Season 2, Episode 7
Even if he does, Sansa will do her DUTY.
Game of Thrones Season 2, Episode 3
And it's our DUTY
to assist the capital in time of need.
Game of Thrones Season 3, Episode 1
Not if you lot do your DUTY for
however long it takes to beat them back.
Game of Thrones Season 4, Episode 9
I will marry Sansa Stark
and do my DUTY by her.
Game of Thrones Season 3, Episode 7