Many centuries later, we know about it from a grant of privilege to Wawrzęta (or Wawrzyniec - Lawrence) Korwin z Ślepowrony from Duke Konrad I of Masovia, at Warsaw in 1224, according to Jan Długosz, Bartholomew Paprocki, Count Juliusz Ostrowski, etc.

The so-called Roman-Hungarian legend of Korwin starts in the 16th century under the influence of Renaissance humanism culture and vivacious contacts between Polish nobility and Hungarian Royal Court.

Just as he was about to engage the barbarian, a raven flew from a trunk, perched upon Valerius's helmet, and began to attack his foe's eyes with its beak so fiercely that the warrior was blind.

His descendant, Marcus Valerius Messalla Corvinus (64BC – 8AD) was chosen to the Roman consulate with Caesar Augustus and the Baroque authors understand he became a big landowner in the Dacian-Panonnian frontiers.

In addition the Silesian Annals (other version of this legend) tell that was not the king himself who shot the raven but a Polish soldier, who was rewarded with the Korwin coat of arms.

Actually, Matthias Corvinus raised the Black Army which is recognized as the first standing continental European fighting force not under conscription and with regular pay since the Roman Empire.

"Korwin I sometimes known as Ślepowron variation - In a red field, a black raven is facing left with a gold ring in its beak; it stands on a natural tree-stump, lying crosswise with two knots on top and two on the bottom.

"Korwin III – In a red field there is a black raven with a gold ring in its beak, over a cut stump lying across, between two knots on each side.