As part of the moral legislation of Augustus in 18 BC, the "Lex Iulia de adulteriis" ("Julian Law concerning acts of adultery") was directed at punishing married women who engaged in extra-marital affairs. The implementation of punishment was the responsibility of the "paterfamilias", the male head of household to whose legal and moral authority the adulterous party was subject. If a father discovered that his married daughter was committing adultery in either his own house or the house of his son-in-law, he was entitled to kill both the woman and her lover; if he killed only one of the adulterers, he could be charged with murder. While advertising the father's power, the extremity of the sentence seems to have led to its judicious implementation, since cases in which this sentence was carried out are infrequently recorded — most notoriously, by Augustus himself against his own daughter.