In the language of kuen-gur tribe, inhabitants of Kardun-Gurra "goddess" of science is called mother Nusaba.
Later the queen of Saba - Makeda or Bilkis - may also have beared this title and his marriage with king Ashe-Lam-Maha that resulted in the birth of Menelik constituted the ancestry for zhé-speaking sabonán tribe,meaning saba-wa-na-an.
Some of makedonians are indeed of zhé origin descending from Ak-Keram-Ma-wa and his son E-zha-bet-Dawa of the family of A-zhe-reg-ha and are related zhé-dou of the Zeus of Argos.
This all could reflect in this name of some zhé and other families : Nusaba-Umm
Balázs Déri's vision.