Tétrade of Lyon (Latin: Tetradius or Tetrardus) is the 11th bishop of Lyon. He replaces Maxime in the first half of the 4th century.
Like his predecessor Maximus, he is known from the various lists of the first archbishops of Lyon and chronicles the history of the Church of Lyon. It is sometimes confused with Tetrad, bishop of Bourges who lived two centuries later.
References
Tétradius of Lyon Wikipedia(Text) CC BY-SA