Euron Greyjoy's armada owns
the Narrow Sea.
Game of Thrones Season 7, Episode 3
Of course, you would have friends
from across the Narrow Sea.
Game of Thrones Season 1, Episode 5
Across the Narrow Sea, your books are
filled with words like "usurper"
Game of Thrones Season 4, Episode 6
and across the Narrow
Sea a house, servants.
Game of Thrones Season 4, Episode 2
I need to cross the Narrow Sea.
Game of Thrones Season 2, Episode 6