let me learn you a few facts boys and robotic lady.
osmanli never called greeks from greece rum they were called yunanli. they refer to greece as yunanistan. where as the charluis before they go to londonstan are refered to as rum.
these are unavoidable truths.
when it comes to terks you average rum pleb cannot pronounce terggis properly and hence it sound like terggish. what is language if it is not alive and does not evolve. it becomes greek. you see even even death is greek.
my dear woman you got it all wrong baby. osmanli were never refereed to as ottoman by the persians, only by the greeks because they were plebs. osmanlis was called that because of the padishah who started the empire was called osman. perfectly usable name to this day. in fact just like your average charlui has an uncle bob, you average terg has an uncle called osman.
listen to the cannon and the mehder. this is what the yunanlis heard just before constinapole was transfered over to the proper empire and renamed appropriately as istanbul. istan means land and bul means find and grab. it all makes perfect sense once you grapple with the basics.
apparently it was osman was the king who opened the doors of baghdad and fought with his head under his armpit for three days. thats what the song says.
https://www.youtube.com/watch?v=BX_Euq300OM