The name is derived from Odin’s name Yggr (the deep thinker), and drasil (carrier) - it therefore means the Bearer or Manifestor of God.
Harper’s Book of Facts, 1905.
The greatest soldier of ancient times, Alexander (356-323 B.C.) was tutored by the greatest thinker, Aristotle.
Isaac Asimov’s Book of Facts, 1979.