Sultan Murad I ruled the Ottoman Empire from 1359 to 1389. It was under his rule that Adrianople (Edirne) fell to the Ottomans and became their new capital.
Portrait of Sultan Murad I (ca. 1325–1389), mural in the Manyal Palace Museum, Cairo, Egypt, probably before 1952, unknown artist, photography and scan: BomBom; source: Wikimedia Commons, http://commons.wikimedia.org/wiki/File:Murad_I_-_Manyal_Palace_Museum.JPG, public domain.