None of these are "clear examples." The logic seems downright tortured.
Picts were a real people. Lucas used Picts. Therefore he took a pre-existing literary name, which as you say is NOT literary, from Howard?
willow Ufgood and Frodo Baggins are both names made of two troches, and that's a "reworking?" So is my name, Morgan Sowell. Were my parents inspired by Frodo, or Bilbo, or Lotho? Or by Millard Fillmorr, who also has the same meter?