Oathkeeper
From A Wiki of Ice and Fire
Oathkeeper is a Valyrian steel longsword which was forged from Eddard Stark's greatsword Ice, along with the smaller blade Widow's Wail.
[edit] History
Oathkeeper was given to Jaime Lannister by his father Tywin. Jaime later gave it to Brienne of Tarth, who named it Oathkeeper when he charged her with finding the whereabouts of Sansa Stark.


