Within the Legends canon, the "Star Wars: Legacy" comic series introduced us to the grey Jedi Cade Skywalker. His father, Kol Skywalker, and uncle, Nat Skywalker, were apparently the grandsons of Ben Skywalker (and therefore the great-grandsons of Luke).
Has the name of their father (Ben Skywalker's son) been revealed in Legends canon?