Ancestry line

It's been a couple weeks since I have written on here, I have been investigating my own family tree. My dad's side of the family is easy, my grandmother and great-grandmother filled in all the missing pieces since I was a child. My mother's side is the one I am curious about, I never properly knew my mother's parents.My maternal grandmother died before I was born what I know from her is that she was from Texas. So I decided to look up my mother side of the family I knew minimal information but now I believe I discovered more. My mother is American, her mother was born in Texas by a Texan mother and a Mexican descent father, her father was born in Mexico by an Italian father and native American mother. My mother was surprised to find that her grandfather was from Italy, she knew her grandmother was Native American but could not find the name of the tribe unfortunately neither could I. But I did find that someone out there identified my grandfathers stepmother as his mother, when I told my mother this she was shocked no wonder we could not find more information on my grandfather. Sadly to say I could not find more on my maternal great grandparents, the only thing I know is that both great-grandmothers were Native American. I am glad that at least my mom can say that she is just American, she may have family members that may still reside in Mexico and are truly Mexicans. Neither me nor my mom will be deny that we have family in Mexico, we are now sure of our families line. I have been teased repeatedly by my cousins calling me Mexican which I am not, since my father is from Peru and my mother is American I consider myself Peruvian/American. Now I have proof to correct my cousins, seeing that they are all significantly older than me they may not believe me but frankly I don't care. I'm just glad that I could find something for my mom to know more about her family. Now all that is left is to find out the tribes that both great-grandmothers were from, which I think will be the hardest to find. I hope everyone out there can find or know where their beginnings are. It's always fun to find out!