Miloš Obilić (, ] ; died June 15, 1389) was a Serbian knight in the service of Prince Lazar, during the invasion of the Ottoman Empire.
 He is not mentioned in contemporary sources, but he features prominently in later accounts of the Battle of Kosovo as the assassin of the Ottoman sultan Murad I.
 Although the assassin remains anonymous in sources until the late 15th century, the dissemination of the story of Murad's assassination in Florentine, Serbian, Ottoman and Greek sources suggests that versions of it circulated widely across the Balkans within half a century after the event.
Mehmed II (Ottoman Turkish: محمد ثانى‎ , "Meḥmed-i sānī"; Modern Turkish: "II.
 Mehmet" ; 30 March 1432 – 3 May 1481), commonly known as Mehmed the Conqueror (Turkish: "Fatih Sultan Mehmet" ), was an Ottoman sultan who ruled first for a short time from August 1444 to September 1446, and later from February 1451 to May 1481.
 At the age of 21, he conquered Constantinople (modern-day Istanbul) and brought an end to the Eastern Roman Empire.
 Mehmed continued his conquests in Anatolia with its reunification and in Southeast Europe as far west as Bosnia.
 Mehmed is considered a hero in modern-day Turkey and parts of the wider Muslim world.
 Among other things, Istanbul's Fatih district, Fatih Sultan Mehmet Bridge and Fatih Mosque are named after him.
In the Ottoman period, in the 16th century, there was an influential Sokolović family in the Sanjak of Bosnia that had two branches, one that was Orthodox (Serb), and was dominant in the Serbian Orthodox Church, while the other became Islamized, and was influential in the Ottoman government.
 The Orthodox branch included Serbian patriarchs Makarije Sokolović (s. 1557–71), Antonije Sokolović (s. 1571–75), Gerasim Sokolović (s. 1575–86) and Savatije Sokolović (s. 1587).
 The Muslim branch included Sokollu Mehmed Pasha (Mehmed-paša Sokolović), the Ottoman Grand Vizier (s. 1565–79), Sokolluzade Lala Mehmed Pasha Grand vizier (1602-1604) and Sokollu Ferhad Pasha (Ferhad-paša Sokolović), the Beylerbey of Bosnia.
Mihalgazi, formerly Gümele (Before 1927), is a town and district of Eskişehir Province in the Black Sea Anatolia region of Turkey.
 According to 2010 census, population of the district is 3,876 of which 1,730 live in the town of Mihalgazi.
 The district covers an area of 131 km2 , and the town lies at an average elevation of 328 m .
 She borders İnhisar to the west, Yenipazar to the northwest, Sarıcakaya to the east and Tepebaşı (Eskişehir) to the south.
 Mihalgazi has four boroughs and five villages.
 Alpagut and Sakarılıca, who are 2 of these villages, have a municipality.
 She 35 km away from Eskişehir.
 She was part of Eskişehir sanjak between 1292- second half of 15th century.
 She was part of Göynük township of Bursa sanjak between second half of 15th one - 16th one, her of Bolu sanjak between 16th century - 1894.
 She bounded to İnhisar nahiya in Söğüt township of Bilecik sanjak between 1894-1923.
 She was part of Söğüt district of Bilecik Province between 1923-1946 and became a township and changed her name as Mihalgazi in 1927 after People of Gümele repulsed attacks of Greeks troops, who marched from Söğüt and Eskişehir during Turkish War of Independence in 1921.
 She bounded to Central District of Eskişehir Province in 1946 and Sarıcakaya district of her in 1958.
 She had a municipality in 1967.
 She finally a district of Eskişehir Province in 1990.
 She is famous with hot spring in Sakarılıca.
Hüseyin Avni Pasha (1820, Isparta – June 15th 1876, Istanbul) was an Ottoman statesman.
 He was Grand Vizier of the Ottoman Empire from 15 February 1874 to 26 April 1875.
 He was killed by Çerkess Hassan the younger brother of Neşerek Kadın Efendi, who accused him of the murder of Ottoman Sultan Abdülaziz, on 15 June 1876 during a cabinet meeting of Ottoman Sultan Mehmed Murad V at the Palace of Midhat Pasha near Beyazıt in Fatih, Istanbul.
Damat Mehmed Adil Ferid Pasha (Ottoman Turkish: محمد عادل فريد پاشا‎ ;‎ 1853 – 6 October 1923), known simply as Damat Ferid Pasha, was an Ottoman statesman of Albanian origin who held the office of Grand Vizier during two periods under the reign of the last Ottoman Sultan Mehmed VI Vahdeddin, the first time between 4 March 1919 and 2 October 1919 and the second time between 5 April 1920 and 21 October 1920, a title equivalent to the post of Minister of Internal Affairs.
 Officially, he was brought to the office a total of five times, since his cabinets were recurrently dismissed under various pressures and he had to present new ones.
The King Mosque (Albanian: "Xhamia e Mbretit" ), also known as the Sultan's Mosque ("Xhamia e Sulltanit" ) or Sultan Bayezid Mosque, is a mosque and a Cultural Monument of Albania, located in Berat.
 It was built in the 15th century by the Ottoman sultan Bayezid II for the local Albanian population.
 The mosque became a Cultural Monument in 1948.
The Sanjak of Nakşa Berre or Naxos (Ottoman Turkish: "Sancak-i/Liva-i Nakşa Berre"; Greek: λιβᾶς/σαντζάκι Νάξου ) was a second-level Ottoman province ("sanjak" or "liva") encompassing the central and southern Cyclades islands, and named after the two largest islands of Naxos (Turkish: "Nakşa" ) and Paros (Tr.
 "Berre").
 The "sanjak" encompassed the territory of the former Duchy of Naxos, which had been tributary to the Ottomans since 1537, but was not formally incorporated into the Empire until after 1579, when the last Duke, Joseph Nasi, was executed.
 The "sanjak" formed part of the Eyalet of the Archipelago at least by 1600, but is no longer attested after the late 18th century.
 Aside from the "sanjakbey" at Naxos, two other beys, at Milos and Santorini, are recorded in 1629.
 With the outbreak of the Greek War of Independence in 1821, the islands came under Greek control.
Mehmed Bey Minnetoğlu (Turkish: "Minnetoğlu Mehmed Bey" , ; 1463–64) was an Ottoman general and the first governor of the Sanjak of Bosnia, serving Sultan Mehmed the Conqueror (r. 1451–81)
Kanijeli Siyavuş Pasha (Bosnian: "Sijavuš-paša Kanjižanin" , died 1602, Istanbul) was an Ottoman statesman from the Sanjak of Bosnia.
 He was Grand Vizier between 24 December 1582 and 28 July 1584, 15 April 1586 and 2 April 1589, and 4 April 1592 and 28 January 1593.
 He was from Kanizsa in modern-day Hungary, then part of first the Sanjak and then the Eyalet of Bosnia.
 He was married to Fatma Sultan, daughter of Selim II.

Question: Which Ottoman sultan who ruled for two periods in the 15th century was served by the first governer of the Sanjak of Bosnia?
Answer: Mehmed the Conqueror