Orban, also known as Urban (; died 1453), was an

iron founder An iron founder (also iron-founder or ironfounder) in its more general sense is a worker in molten ferrous metal, generally working within an iron foundry. However, the term 'iron founder' is usually reserved for the owner or manager of an iron fou ...

and

engineer Engineers, as practitioners of engineering, are professionals who Invention, invent, design, build, maintain and test machines, complex systems, structures, gadgets and materials. They aim to fulfill functional objectives and requirements while ...

from Brassó,

Transylvania Transylvania ( or ; ; or ; Transylvanian Saxon dialect, Transylvanian Saxon: ''Siweberjen'') is a List of historical regions of Central Europe, historical and cultural region in Central Europe, encompassing central Romania. To the east and ...

, in the

Kingdom of Hungary The Kingdom of Hungary was a monarchy in Central Europe that existed for nearly a millennium, from 1000 to 1946 and was a key part of the Habsburg monarchy from 1526-1918. The Principality of Hungary emerged as a Christian kingdom upon the Coro ...

(today

Brașov Brașov (, , ; , also ''Brasau''; ; ; Transylvanian Saxon dialect, Transylvanian Saxon: ''Kruhnen'') is a city in Transylvania, Romania and the county seat (i.e. administrative centre) of Brașov County. According to the 2021 Romanian census, ...

Romania Romania is a country located at the crossroads of Central Europe, Central, Eastern Europe, Eastern and Southeast Europe. It borders Ukraine to the north and east, Hungary to the west, Serbia to the southwest, Bulgaria to the south, Moldova to ...

), who cast

large-calibre artillery The formal definition of large-calibre artillery used by the United Nations Register of Conventional Arms (UNROCA) is "field gun, guns, howitzers, artillery pieces, combining the characteristics of a field gun, gun, howitzer, mortar (weapon), m ...

, Basilic, for the

siege of Constantinople Constantinople (part of modern Istanbul, Turkey) was built on the land that links Europe to Asia through Bosporus and connects the Sea of Marmara and the Black Sea. As a transcontinental city within the Silk Road, Constantinople had a strategic ...

by the Ottomans in 1453. Orban was Hungarian, according to most modern authors, while some scholars also mention his potential

German German(s) may refer to: * Germany, the country of the Germans and German things **Germania (Roman era) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizenship in Germany, see also Ge ...

ancestry. Alternative theories suggest he had

Wallachia Wallachia or Walachia (; ; : , : ) is a historical and geographical region of modern-day Romania. It is situated north of the Lower Danube and south of the Southern Carpathians. Wallachia was traditionally divided into two sections, Munteni ...

n roots.

Laonikos Chalkokondyles Laonikos Chalkokondyles (; – ), also latinized as Laonicus Chalcocondyles, was a Byzantine Greek historian from Athens. He is known for his '' Demonstrations of Histories'' in ten books, which record the last 150 years of the Byzantine Empi ...

used the term ''

Dacia Dacia (, ; ) was the land inhabited by the Dacians, its core in Transylvania, stretching to the Danube in the south, the Black Sea in the east, and the Tisza in the west. The Carpathian Mountains were located in the middle of Dacia. It thus ro ...

n'' to describe him. He had offered his services to the Byzantines in 1452, a year before the Ottomans attacked the city, but the Byzantine emperor

Constantine XI Constantine XI Dragases Palaiologos or Dragaš Palaeologus (; 8 February 140429 May 1453) was the last reigning Byzantine emperor from 23 January 1449 until his death in battle at the fall of Constantinople on 29 May 1453. Constantine's death ...

could not afford Orban's high salary nor did the Byzantines possess the materials necessary for constructing such a large siege cannon. Orban then left

Constantinople Constantinople (#Names of Constantinople, see other names) was a historical city located on the Bosporus that served as the capital of the Roman Empire, Roman, Byzantine Empire, Byzantine, Latin Empire, Latin, and Ottoman Empire, Ottoman empire ...

and approached the Ottoman sultan

Mehmed II Mehmed II (; , ; 30 March 14323 May 1481), commonly known as Mehmed the Conqueror (; ), was twice the sultan of the Ottoman Empire from August 1444 to September 1446 and then later from February 1451 to May 1481. In Mehmed II's first reign, ...

, who was preparing to besiege the city. Claiming that his weapon could blast 'the walls of

Babylon Babylon ( ) was an ancient city located on the lower Euphrates river in southern Mesopotamia, within modern-day Hillah, Iraq, about south of modern-day Baghdad. Babylon functioned as the main cultural and political centre of the Akkadian-s ...

itself', Orban was given abundant funds and materials by the sultan. Orban managed to build the giant gun within three months at

Adrianople Edirne (; ), historically known as Orestias, Adrianople, is a city in Turkey, in the northwestern part of the Edirne Province, province of Edirne in Eastern Thrace. Situated from the Greek and from the Bulgarian borders, Edirne was the second c ...

, whence sixty

oxen An ox (: oxen), also known as a bullock (in BrE, British, AusE, Australian, and IndE, Indian English), is a large bovine, trained and used as a draft animal. Oxen are commonly castration, castrated adult male cattle, because castration i ...

dragged it to

. Orban also produced other, smaller cannons used by the Turkish siege forces. Bombarding technology similar to Orban's had first been developed for the Hungarian Army. It rose in popularity during the early 1400s all over western Europe, transforming siege warfare. Examples of pieces similar to Orban's productions like the Faule Mette, Dulle Griet, Mons Meg and the

Pumhart von Steyr The Pumhart von Steyr () is a medieval large-calibre cannon from Styria, Austria, and the largest known wrought-iron bombard by caliber. It weighs around and has a length of more than . It was produced in the early 15th century and could fire, ...

are still extant from the period. Orban, along with an entire crew, was probably killed during the siege when one of his cannons exploded, which was not an unusual occurrence during that time.

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