He is the Germanic version of TYR the God of War. TIW is shrouded in a great deal of mystery, speculation and rumor. He may once have been a wooden pillar that supported the Universe.
The Germans or Teutons, who lost no opportunity to invade mythology, called him Tiw or Ziu, but rumors persist that he was also known as Things. Which things? We have no idea. But that, so we are told, is where the German word for Tuesday (Dienstag) is derived.
As a War God, TIW became associated with the Greek ARES by way of MARS. The only certified documentation that can be produced is via the Norse legends, but how often do Gods get asked to produce a passport?
About TIW’s only legacy now is that Tuesday is named after him. What he did on Tuesdays we’re not quite sure. Perhaps it was his day off.