The documents of Al-Mahâkim Shar'iyah (Legal courts) of all categories, including the endowments documents, contain important information on the two cities of Médea and Miliana society, (Two Algerian cities located within a hundred kilometers southwest of Algiers), about the family structure, and the family Kinships and alliance, and other social connections, within each one of the two cities, and between them. These documents provide rich data on:  on the true ages  the nobilities and the reputations of some families  the statistics and characteristics of these families  the debts of wives towards their husbands  the remarriage of widowed  the phenomenon of delayed procreation among fathers  the various phenomena of solidarity and reconciliation, and social integration. The behavior of the individuals and their entourage in the city, and in the countryside, is one of the social cultural and economic phenomena, through which we could detect other phenomena of the society structure, especially when we try to explore the history of the two cities at an earlier period, keeping in mind that historical bibliographies about this period provides only limited information, that cannot highlights us about the characteristics of the two cities of Médéa and Miliana.