a Slavic citadel from 1263 until it was occupied by the Ottoman Empire in 1429. Given the importance of Saint Peter, this would likely have been a very important cathedral, its exact location is unknown. Some have speculated that it was located in the present-day Sarajevo neighborhood of Skenderija, as it is said that during construction in the late 19th century, there were found Roman-style columns dating to sometime around the 12th century. Whether this city was indeed located at modern-day Sarajevo or not, an important city called Vrhbosna did indeed exist at the time and the region was of great importance. Still, it is considered somewhat strange that the location of such an important city is unknown. It is possible that the city may have been destroyed sometime between the 13th century and the Ottoman occupation. It is a well-known fact that foreign armies had often made their way to Vrhbosna in wars with Bosnia, and perhaps one of them razed the city, leaving it in the condition that the Turks found it in the mid 15th century. Early Ottoman Era Sarajevo as it is known today was founded by the Ottoman Empire in the 1450s upon conquering the region, with 1461 typically used as the city's founding date. The first known Ottoman governor of Bosnia, Isa-Beg Ishaković, chose the tiny local village of Brodac as a good space for a new city. He exchanged land with its residents, giving them today's Hrasnica neighborhood in Ilidža), and soon began building his provincial capital as he envisioned it. He quickly built a number of key objects, including a mosque, a closed marketplace, a public bath, a bridge, a hostel, and the governor's castle ("Saray") which gave the city its present name. The mosque was named "Careva Džamija" (the Emperor's Mosque; the Imperial Mosque) in honor of the Sultan Mehmed II. N.B. : Careva " pronounced tsareva ":meaning "Caesar, czar, tzar" With the improvements Sarajevo quickly grew into the largest city in the region. Many Christians converted to Islam at this time, as Ottoman reports from the period often tell of residents with Muslim names but of Christian named fathers, such as "Mehmed, son of Ivan." Meanwhile, an Orthodox population first appeared in Sarajevo at this time, as the Orthodox Church was built. A colony of Ragusan merchants also appeared in Sarajevo at this time. Soon after, in the early 16th