1) Serbian surname 
In the 12th century Mitterburg Castle was in possession of the Lower Carniolan count Meinhard of Schwarzenburg, who held the office of a Vogt of the Poreč bishops (in Latin documents he is known as Cernogradus), and established the Pazin County (earldom). Upon his death, Pazin was inherited by his son-in-law Count Engelbert III of Gorizia (Görz)...