Wappenbuch des Hans Ulrich Fisch. Papier, 31.5 x 19.5 cm, Aarau 1627. Aarau, Staatsarchiv Aargau, V/4-1985/0001, fol.50r

Coat of arms of w:Ernest, Duke of Austria (1377-1424), "Ernest the Iron" (German: Ernst der Eiserne), a member of the House of Habsburg, who ruled over the Inner Austrian duchies of Styria, Carinthia and Carniola from 1406 until his death. Ernest married his first wife, Margaret of Pomerania. She was a daughter of the Griffin duke Bogislaw V of Pomerania and his second wife, Adelheid of Brunswick-Grubenhagen. He married secondly Cymburgis of Masovia (Polish: Cymbarka mazowiecka; German: Cimburgis von Masowien; 1394 or 1397 – 28 September 1429), also spelled Zimburgis or Cimburga, was Princess of Masovia of the Polish Piast dynasty and Duchess of Austria from 1412 until 1424, by her marriage with the Habsburg duke Ernest the Iron. As the mother of later Emperor Frederick III, Cymburgis, after Gertrude of Hohenberg, became the second female ancestor of all later Habsburgs, as only her husband's Ernestine branch of the family survived in the male line.

Heraldry

• Coat of arms known as Altösterreich ("Old Austria"): Azure, five eagles displayed or, sometimes with field sable. Adopted and fixed at 5 by w:Rudolf IV, Duke of Austria (d.1365) (House of Habsburg)
• Arms of Habsburg (ancient): Or, a lion rampant gules crowned armed and langued azure. Replaced by Habsburg (modern), being the arms of Babenberg (Duchies of Austria and Styria): Gules, a fess argent (known as the Bindenschild - see Category:Bindenschild)
• w:Duchy of Carinthia (w:Duchy of Swabia impaling Habsburg (modern))
• Eagle of Tyrol
• Inescutcheon overall: Arms (modern) of the w:House of Habsburg (Archdukes of Austria): Gules, a fess argent ("Bindenschild" / Neuösterreich, "New Austria"[1]); originally the arms of the House of Babenburg (Duchies of Austria and Styria); formerly Habsburg used for arms the "Lion of Habsburg" ("Habsburg ancient") (see Category:Lion of Habsburg)
• House of Piast
• Coat of arms of the Duchy of Wenden: Argent, a griffin segreant bendy sinister of six gules and vert