Which (individual) sages of Talmud were said to be traced back to King David? IIRC, R. Hillel was one (?). Are there others? Sources are welcome.
The Wikipedia entry for Hillel says he also was a descendant of King David:
According to the "Iggeret of Rav Sherira Gaon" (a comprehensive history of the composition of the Talmud from the 10th century), Hillel descended from the Tribe of Benjamin on his father's side, and from the family of David on his mother's side.