Question: Whatis the name of this Ottoman sultan who ruled from August 1444-September 1446 that brought an end to the Eastern Roman Empire and was the son of Murad II

This is a list of campaigns personally led by Mehmed II or Sultan Mehmed the Conqueror (30 March 1432 – 3 May 1481) (Ottoman Turkish: محمد ثانى, Meḥmed-i s̠ānī; Turkish: II.  Mehmet; also known as el-Fātiḥ, الفاتح, "the Conqueror" in Ottoman Turkish; in modern Turkish, Fatih Sultan Mehmet; also called Mahomet II in early modern Europe) was Sultan of the Ottoman Empire twice, first for a short time from 1444 to September 1446, and later from February 1451 to 1481.  At the age of 21, he conquered Constantinople and brought an end to the Byzantine Empire, transforming the Ottoman state into an empire.  Mehmed continued his conquests in Asia, with the Anatolian reunification, and in Europe, as far as Bosnia and Croatia.  Mehmed II is regarded as a national hero in Turkey, and Istanbul's Fatih Sultan Mehmet Bridge is named after him. <SEP> Hatice Âlime (Halime) Hüma Hatun (Ottoman Turkish: هما خاتون‎ , 1410 ‒ September 1449) was the fourth wife of Ottoman Sultan Murad II and mother of Mehmed II.  She was a slave girl.  Nothing is known of her family background, apart from the fact that an Ottoman inscription (vakfiye) describes her as "Hātun binti Abdullah" (Daughter of Abdullah); at that time, people who converted to Islam were given the name "Abdullah" meaning "Servant of God", which is evidence of her non-Muslim origin.  Her name, "hüma", means "bird of paradise", after the Persian legend.  There are two theories on her origin: She was a romanian named Stella; She was Serbian, some sources saying that she was a princess from the Principality of Zeta and a relative of Đurađ II Balšić.  S. Runciman and Ilber Ortayli support that she was of Slavic descent.  She died in September 1449 in Bursa. <SEP> Murad II's reign was marked by the long war he fought against the Christian feudal lords of the Balkans and the Turkish beyliks in Anatolia, a conflict that lasted 25 years.  Their marriage served as an alliance between the Ottomans and this buffer state, and produced a son, Mehmed II, who would go on to successfully conquer the Byzantine Empire's capital, Constantinople, in 1453.  He was brought up in Amasya, and ascended the throne on the death of his father Mehmed I.  His mother was Valide Sultan Emine Hatun (daughter of Suleyman Bey, ruler of Dulkadirids), his father's third consort. <SEP> Mehmed II (Ottoman Turkish: محمد ثانى‎ , "Meḥmed-i sānī"; Modern Turkish: "II.  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.  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.