Vigilance
From A Wiki of Ice and Fire
Vigilance is a Valyrian steel longsword belonging to House Hightower.[1]
History
Lord Ormund Hightower wielded the blade during the Dance of the Dragons fighting for king Aegon II.[1] After the Battle on the Honeywine he used it to knight his squire, the king's brother, Prince Daeron dubbing him "Ser Daeron the Daring", for turning the battle in his favour with his dragon Tessarion.[1] Lord Ormund was killed by Roddy the Ruin at the Battle of Tumbleton.[1] It is unknown what happened to Vigilance afterwards.