What is "aladhadh"

The House of Aladhadh is an Arabic house belonging to one of two major tribes in Arabia; Shammar and Uniza. The Uniza descendants are of the Aldabra clan and centered in Authal in Saudi Arabia. The Shammar progeny named Aladhadh is of the Alaslam tribe of the Shammar. There is also the House of "Aladhadh" from the Uniza tribe. People with this last name are on both sides of the Iraqi- Saudi border. The contributions of the House of Aladhadh to Iraq's history makes them the focus of this article as opposed to their kin who live sixty miles southeast of Ha'il. They descend from Sheikh Mohamad Ibn Ali Ibn Abdul Aziz Aladhadh who left to Iraq from Najd, later annexed by King Abdul Aziz Al-Saud