Complex sentence: Families of an Albergo shared the same: name, insignia (crest), political views, economic interests, lived in proximity of each other, and often attended the same churches and social functions, as well as marrying within the group.
Split into simpler sentences: Families of an Albergo shared the same: name, insignia (crest), political views, and economic interests. They lived in proximity of each other, often attended the same churches and social functions, and usually married within the group.