The Fourth Age
Sting was an elven short sword or knife forged in Gondolin in the First Age. By the end of the Third Age, it had somehow found its way into a troll hoard along with more famous blades from ancient Gondolin, like Orcrist and Glamdring. They were recovered by Gandalf, Thorin Oakenshield, and their company on the quest for Erebor. Sting was taken by Bilbo Baggins, who passed it on to his heir, Frodo Baggins, who wielded it on his own quest to destroy the Ring of Power.
Disappointed in his son’s predilection for theft and shirking his responsibilities, Elfstan Fairbairn, the grandson of Samwise Gamgee, presented his son Marroc with a blade, a family heirloom which she claimed was Sting itself. He said that Frodo left the blade with his grandfather Sam when he left for the Undying Lands, and that Sam left it to his mother, Elanor, when he followed into the West himself. He hoped that presenting Marroc with such an heirloom would make him realize his place in the world, and encourage him to become more responsible. Marroc recognizes that it is an ancient and powerful blade, but doesn’t really believe that his father would entrust him with something as precious as Sting. Undoubtedly either Frodo or Sam took that blade with them to Valinor. Admittedly, it’s a good forgery: Elfstan even had the same Sindarin inscription engraved on it that Bilbo did: Maegnas aen estar nin dagnir in yngyl im, meaning, “Maegnas is my name, I am the spider’s bane.”