If you consider the status at the end of ADWD, that is, fighters that are confirmed alive, currently in the Seven Kingdoms (that is, Westeros south of the Wall), it would be hard to say. Please mind that this answer might have spoilers for those who have not read the 5 books. read more
While far from the best fighter in Westeros, Jon Snow may certainly be one of the best swordsmen to join the Night’s Watch. With the Valyrian-steel sword, Longclaw, at his disposal, Snow has dispatched wildlings and White Walkers alike, fighting with greater effect than both his brother, Robb, and his deceased father. read more
8. Seven-Branched Sword. The Baekje Dynasty was an ancient kingdom located in southwest Korea. At its peak in the 4th century, Baekje controlled colonies in China and most of the western Korean Peninsula. They were one of the Three Kingdoms of Korea, together with Goguryeo and Silla. read more