 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.The Al Jadilah's namesake was a woman of the Tayy named Jadilah, whose sons Hur and Jundub became the progenitors of Banu Hur and Banu Jundub, respectively.The latter produced the numerous Al al-Tha'alib (Tha'laba) subbranch, which itself produced the Banu La'm, which became a leading sub-branch of Al Jadilah in northern Arabia.