Ermes di Colloredo (28 March 1622 – 21 September 1692) was an Italian count and writer who served the Grand Duke of Tuscany, the Holy Roman Emperor and the Republic of Venice.

[3] A cousin of Ciro di Pers, he was educated at the Medici court in Florence as page of Grand Duke Ferdinando II, and subsequently became a career soldier.

[4] He entered the service of Emperor Ferdinand III during the Thirty Years War as a Cuirassiers' Officier, at the orders of his uncle, Generalfeldmarschall Rudolf von Colloredo, Governor of Prague, and later served the Republic of Venice as a Cavalry Colonel.

He used the koinè from San Daniele, which would become the most notable literary language and the basis of today's standard Friulian.

[2] His lively dialogues are generally considered the genuine origins of Friulian prose.