Nowadays nationality is represented by passport. However, a name can be used to identify ethnicity. Ethnic Russians mostly have Christian names of Greek or Hebrew origin. Rarely do you meet a Russian guy with a name of turkic or arabic origin. Your name is widespread among muslim ethnic minorities of Russia more often than not, such as tatars, chechens, bashkirs etc. Maybe you have predecessors from these minorities. There's a singer called Manizha, she's a Tajik with Russian citizenship but calls herself "Russian woman".
Indeed, looks like the majority of Tatars in the world are indigenous to the land controlled by Russia.