Orban (also known as Urban) is an alleged Hungarian or German weapons-smith, who many European historians are quick to point out and claim, is allegedly the designer of all of the Great Turkish bombards.[64] However, such claims are problematic, in that, hardly anything is known of his life, and after 1453 any record of him vanishes from history. Indeed all of the information on Orban also comes from a single non-Ottoman based source; Kritoboulos of Imbros, who wrote about him in his book "History" (1467)[65]—however he is known to have been an unreliable historian, since he never verified his sources and nor does he use correct names for people.[n. 22] The Ottomans also make no special mention (or indeed any mention) of him in their history. Another particular problem with this theory is that Orban was known to sign his creations when he cast them, but many of them simply don't exist; which is very unusual given how the Ottoman's kept and conserved many of their other historical cannons of this time period in pristine condition.[53] Munir Ali, for example designed (likely independently) his own bombard, the "Dardanelles Gun" in 1464,[n. 23] which has survived for over 554 years (it now sits in the "Tower of London"; being gifted to Queen Victoria by the Turkish Emperor Abdul Aziz I in the 20th Century[66]).[53] Other European authors have suggested Munir Ali and Orban may actually be the one and the same person, given how similar in design Ali's and Orban's guns were; and given how Orban's records vanish around this time, only to be replaced with Munir Ali (who may actually be Orban after he converted to Islam).[53] (also known as) is an alleged Hungarian or German weapons-smith, who many European historians are quick to point out and claim, is allegedly the designer of all of the Great Turkish bombards.However, such claims are problematic, in that, hardly anything is known of his life, and after 1453 any record of him vanishes from history. Indeed all of the information on Orban also comes from a single non-Ottoman based source;, who wrote about him in his book(1467)—however he is known to have been an unreliable historian, since he never verified his sources and nor does he use correct names for people.The Ottomans also make no special mention (or indeed any mention) of him in their history. Another particular problem with this theory is that Orban was known to sign his creations when he cast them, but many of them simply don't exist; which is very unusual given how the Ottoman's kept and conserved many of their other historical cannons of this time period in pristine condition.Munir Ali, for example designed (likely independently) his own bombard, thein 1464,which has survived for over 554 years (it now sits in the; being gifted to Queen Victoria by the Turkish Emperor Abdul Aziz I in the 20th Century).Other European authors have suggested Munir Ali and Orban may actually be the one and the same person, given how similar in design Ali's and Orban's guns were; and given how Orban's records vanish around this time, only to be replaced with Munir Ali (who may actually be Orban after he converted to Islam).

Munir Ali's Great Turkish Bombard (cast in 1464). Munir Ali is believed to be Orban, an alleged Hungarian or German bombard designer. The 1464 gun weigh's 18,600 kg (Tower of London).