 The Lutheran leader Philip Melanchthon entrusted him with a letter addressed to the Ecumenical Patriarch of Constantinople to join forces against the Holy Roman Empire and the Ottomans, but all came to naught.The House of Ljubavić is a great example of how printing became a family enterprise.Božidar Ljubavić (1460-1527) was the head of a printing dynasty from the city and municipality of Goražde in the Serbian land of Bosnia-Hercegovina just at the time when the Turkish invasions had taken place.