Joy Connolly reviews Sarah Pomeroy's The Murder Of Regilla: A case of domestic violence in antiquity in the TLS:
As in modern times until very recently, wife-beating was not much talked of by classical writers beyond the odd aside, as when Augustine in his Confessions recollects the bruises he saw as a child marking the faces of his mother’s friends, or when Herodotus and Suetonius report that the Corinthian tyrant Periander and the Emperor Nero beat their pregnant wives to death. Plutarch hints at the frequency of abuse in his Roman Questions, a quirky study of Roman religion and customs, when he wonders why Romans avoid marrying close relatives. He suggests three reasons: Roman men may seek to expand their influence by marrying into different families; they may fear that domestic over-familiarity breeds contempt; or they might prefer an exogamic system where sisters and daughters, should they suffer abuse, could seek help from male kin unrelated (thus under no obligation) to the abuser. The Greek preference for endogamy, Plutarch implies, caught women in a familial trap from which there was no easy escape.