Where does “nada” come from?

nada (Galician) comes from Old Portuguese nada, from Latin nata, from Latin nātus, from Latin gnātus, from Proto-Italic gnātos, from Proto-Indo-European ǵn̥h₁tós, from Proto-Indo-European ǵenh₁- — to produce, to beget, to give birth.

nada (Galician): nothing; third-person singular present indicative...