mid-14c., "property of the Church," also "spiritual legacy of Christ," from Old French patremoine "heritage, patrimony" (12c.) and directly from Latin patrimonium "a paternal estate, inheritance from a father," also figurative, from pater (genitive patris) "father" (see father, n.) + -monium, suffix signifying action, state, condition. Meaning "property inherited from a father or ancestors" is attested from late 14c. Figurative sense of "immaterial things handed down from the past" is from 1580s. A curious sense contrast to matrimony.