Note: I am not a professional fashion historian. If you spot any inconsistency or outright fallacy somewhere in the picture descriptions please feel free (or even better, obliged) to let me know!
late 15th (1492-1495??*) century France - Tours
Prayer book of Anne de Bretagne, made by Jean Poyer
fol. 20v - detail of Margaret of Antioch (kneeling beside a disemboweled dragon)
http://www.themorgan.org/collections/swf/exhibOnline.asp?id=372
*Anne of Brittany commissioned the book to be made for her son Charles Orlando, the Dauphin, who was born 1492 and died 1495
late 15th century France - Tours
New York, The Morgan Library
Prayer book of Anne de Bretagne (made by Jean Poyer)
fol. 10v - Anne at confession
http://www.themorgan.org/collections/swf/exhibOnline.asp?id=364