Ephraem of Pec

Our father among the saints Ephraem of Peć (also Jefrem , Ephrem , or Ephraim the Bulgarian , Serbian: Свети Јефрем патријарх пећки и српски ) was the Patriarch of Serbia two times: from 1375 to 1380, and then from 1389 to 1390. His feast day is celebrated on June 15 / 28 , together with St. Lazar and St. Spyridon .

Source: OrthodoxWiki