Where does “nauidat” come from?

nauidat (Old Spanish) comes from Latin nativitas, from Latin nātīvus, 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.

nauidat (Old Spanish): birth, nativity