Iancu Jianu, also known as Ioniță Jianu, was a Romanian hajduk from Wallachia. A hajduk is a historical term referring to an outlaw or brigand who operated in the mountainous regions of the Balkans.
While the subject's name is associated with regional history, there is no information provided indicating that Iancu Jianu is a city in Romania; rather, he was a specific individual from the Wallachian region.