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. The Jarm (or Jurum) may have also been a branch of the Al al-Tha'alib.