Emhyr var Emreis, Deithwen Addan yn Carn aep Morvudd (in the Elder Speech - the White Flame Dancing on the Barrows of his Enemies), also known to a few under his alias as Duny, the Urcheon of Erlenwald (Polish: Jeż z Erlenwaldu) was the Imperator of the Nilfgaardian Empire, Lord of Metinna, Ebbing, Gemmera, Sovereign of Nazair, Vicovaro and, after marrying Cirilla, King of Cintra, from 1257 when he overthrew the Usurper who murdered his father, Fergus var Emreis, until his death sometime in the late 13th century.
His rule of Nilfgaard was highly aggressive, often pursuing expansionist policies similar to those of his predecessors. This led to the outbreak of two wars against the Northern Kingdoms, both of which he lost. Emhyr var Emreis was an intelligent and brilliant ruler. He chose his people well and crushed many plots against him. He was ruthless toward traitors and moved towards his goals with great determination.
He was publicly favorable to the Elder Race, in stark contrast to monarchs of the North.