Coat of Arms of Cardinal Richelieu
Own work, based on elements by Sodacan, SanglierT and Heralder + File:External Ornaments of a Cardinal Archbishop.svg
Design based on:

http://www.heraldique-blasons-armoiries.com/armoriaux/familles_diverses/blasons_plessis.html
xanderart.tumblr.com/image/28163027780
Tom Lemmens