Based on the Roman chronicles about the Callaeci peoples, along with the Lebor Gabála Érenn narrations and the interpretation of the abundant archaeological remains throughout the northern half of Portugal and Galicia, it is possible to infer that there was a matriarchal society, with a military and religious aristocracy probably of the feudal type. The figures of maximum authority were the chieftain (chefe tribal), of military type and with authority in his Castro or clan, and the druid, mainly referring to medical and religious functions that could be common to several castros. The Celtic cosmogony remained homogeneous due to the ability of the druids to meet in councils with the druids of other areas, which ensured the transmission of knowledge and the most significant events.