Egno von Eppan originates from the aristocrats of the counts of Appiano.
He used to be Prince bishop of Trento and Bressanone. The first time he was mentioned in 1233 in written documents as Kanonikus von Trient. Since 1240 he used to be bishop of Bressanone. For this reason the church expected support by the counts of Appiano opposite other noble families, who aimed at expand their possessions. However, Egno von Eppan was not at all successful, he also had to face fights. The alliances that he entered in the course of treaties were not sanctioned by his superiors. For this reason he was expelled from the religion the same year.
Egno von Eppan was the brother of Gottschalk, who until his dead in 1,300 used to be dome dean in Trento. Also Egno found himself in Trento one year later. However, before there was a fight against the counts of Tyrol, in which all his feud passed on to Albert III. von Tirol and his son-in-law. A reconciliation with Meinhard III brought at least back to him Castel Velders. When Egno von Eppan presented himself to the new pope, he was given back his work as administrator and prince bishop of Trento.
Egno von Eppan deceased on a journey to Rome. When also his brother deceased, the gender of the counts of Appiano extinguished.