How did the ancient Japanese clan system shape the worship of ujigami?

In ancient Japan, the uji (clan) system served as the fundamental social and political structure, directly shaping the worship of ujigami. These clans were hereditary lineage groups united by the belief in a common ancestral deity, the ujigami, who acted as the group's tutelary guardian.123

The clan system influenced worship in several key ways:

• Priestly Leadership: The head of each uji functioned as a priest, mediating the relationship between the clan members and their ujigami. This role was essential for ensuring the group's prosperity, particularly through seasonal rituals like spring prayers for a good harvest and autumn harvest festivals.43
• Social Cohesion: The ujigami served as the core of clan unity. While originally based on blood kinship, the spiritual protection of the ujigami eventually extended to those living near or working for the clan, such as members of the be (occupational groups).3142
• Evolution of Belief: Although clans often worshiped ancestral deities, they also adopted kami of nature or abstract ideas as their tutelary guardians. Over time, this clan-based worship evolved into the modern practice of local community shrine worship.352