At Bu Yusef d tamdint n twilayt n Tizi Uzzu. Isem n tɣiwant d win n yiwen lɛeṛc n Tmurt Taqbaylit. Asideg Tudrin n Taɣiwant Taɣiwant n At Bu Yusef tesɛa 9 tudrin : At Ɛdella At Xlifa Icelliben Werǧa Tabuḥsent Taxliǧt Taẓṛutt Tifeṛḍud Tizi Umalu Tatupunymit Anamek n isem-is : « imadaren n Yusef ». Tadamsa Taddart n Werǧa tesfulleḥ ttjuṛ n igumma (tineqlin, tireḍlimin, tifiras, tigusimin, tifeṛṛanin) d tidal timeẓliyin ɣas ma anezwu yeqseḥ deg tagrest. Tugniwin tummilin Sidi Ḥmed Umezyan Awerǧiw, amrabeḍ yettwaḥemmelen aṭas deg aẓi, d amrabeḍ-amɛellem n taddard n Werǧa Lalla Faḍma n Sumer (Fadhma n At Si Ḥmed, 1830-1863), tasaḍt n uzbu aqbayli deg iseggwasen 1850, telluled deg taddart n Werǧa Tira d timselɣa Zeṛ daɣen Tawilayt n Tizi Uzzu Tidayṛiwin n twilayt n Tizi Uzzu Tiɣiwanin n twilayt n Tizi Uzzu