My mom's parents were both Ukranian.

Then, on my dad's side:

My grandmother's mom was Italian, and her dad was Spanish (Catalan, to be more specific)

My grandfather's mom was native, from a tribe that lived in Argentina (I'm not sure if she was totally native or if she had a bit of european blood, though). His dad was Spanish, from the Basque Country.

So, as most argentinians, I'm a mutt