The two main branches of Tayy were Al al-Ghawth and Al Jadilah. The former was named after al-Ghawth, a son of Julhumah. The immediate offspring of al-Ghawth's son, 'Amr, were Thu'al, Aswadan (commonly known as Nabhan), Hani, Bawlan and Salaman. The offspring of Thu'al (Banu Thu'al) and Aswadan (Banu Nabhan) became leading sub-branches of the Tayy in northern Arabia, while the offspring of Hani (Banu Hani) became a major sub-branch in southern Mesopotamia. According to traditional Arab genealogists, the Banu Thu'al were the ancestors of the Banu Rabi'ah of Syria, and in turn of the Al Fadl emirs.