The family was raised again in 1566 to the rank of Reichfürst; but the death the following year of the recipient (Péter II) prevented the title from being registered and so it did not become hereditary.
(The first hereditary count in Hungary was John Hunyadi in 1453 by King Ladislaus V).The family's origins were from the town of Erdőd (Romanian: Ardud, German: Erdeed) which is in Szatmár (now Satu Mare, Romania).
Monyorokerék is a small village in the south of Burgenland (today Austria) near the Hungarian border.
After the collapse of the Austro-Hungarian Empire, the Erdődys' possessions in the successor states of the monarchy were reduced, mostly through forced expropriation by the Béla Kun regime.
The invasion of the Soviet Red Army forced most descendants of the family to flee to the West and resulted in their complete expropriation and the destruction of most of their goods.