Pater familias

The pater familias, also written as paterfamilias (plural patres familias), was the head of a Roman family. The pater familias was the oldest living male in a household. He had complete control of all family members. The term is Latin for "father of the family" or the "owner of the family estate". The form is archaic in Latin, preserving the old genitive ending in -ās (see Latin declension), whereas in classical Latin the normal genitive ending was -ae. The pater familias was always a Roman citizen.

Roman law and tradition (mos maiorum) established the power of the pater familias within the community of his own extended familia. He held legal privilege over the property of the familia, and varying levels of authority over his dependents: these included his wife and children, certain other relatives through blood or adoption, clients, freedmen and slaves. The same mos maiorum moderated his authority and determined his responsibilities to his own familia and to the broader community. He had a duty to father and raise healthy children as future citizens of Rome, to maintain the moral propriety and well-being of his household, to honour his clan and ancestral gods and to dutifully participate—and if possible, serve—in Rome's political, religious and social life. In effect, the pater familias was expected to be a good citizen. In theory at least, he held powers of life and death over every member of his extended familia through ancient right but in practice, the extreme form of this right was seldom exercised. It was eventually limited by law.

The Roman household was conceived of as an economic and juridical unit or estate: familia originally meant the group of the famuli (the servi or serfs and the slaves of a rural estate) living under the same roof. That meaning later expanded to indicate the familia as the basic Roman social unit, which might include the domus (house or home) but was legally distinct from it: a familia might own one or several homes. All members and properties of a familia were subject to the authority of a pater familias: his legal, social and religious position defined familia as a microcosm of the Roman state. In Roman law, the potestas of the pater familias was official but distinct from that of magistrates.

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