St. Medard - Extremely brief note. Gives his dates as 470-560. - http://www.catholic.org/saints/saint.php?saint_id=201
Medard of Noyon - Gives the saint's dates as c. 470-c. 558. With links to other saints with whom he was associated. - http://www.saintpatrickdc.org/ss/0608.htm#meda
St. Medardus - Bishop of Noyon, d. around 545. - http://www.newadvent.org/cathen/10115b.htm