Rich Ancient DNA From Bell Beaker People In Bronze Age SE Spain

A rich ancient DNA collection from elite burials in Southeast Spain during the Bronze Age establishes that this society probably had hereditary leadership in a moderately complex society, was exogamous, and was patrilocal. A five generation long patriarchal dynasty is established made up of men with Y-DNA haplogroup R1b-Z195.

This isn't terribly surprising. A variety of past ancient DNA studies have established the steppe societies, generally, were patrilocal and exogamous. Likewise, hereditary rule was the most common form of political organization in premodern societies.