In the forward, Pippin went to Rivendell often, consulting with Celeborn who went there to live after Galadriel departed. Tolkien wrote “no one noted when Celeborn took ship, and with him left the last living memory of the elder days in middle earth.”
Cirdan. Although Galadriel and Glorfindel (and Erestor?) are very likely much of similar age, although the first two are the only two likely to have lived in Valinor when the Trees existed. Cirdan has always lived his long life in Middle-Earth.