The form of Roman marriage called conubium, for instance, requires that both spouses be citizens; like men from towns granted civitas sine suffragio, women (at least those eligible for conubium) were citizens without suffrage. The legal status of a mother as a citizen affected her son's citizenship. All Roman citizens recognized as such by law did not hold equal rights and privileges, particularly in regard to holding high office. See A Casebook on Roman Family Law following, and A.N. Sherwin-White, Roman Citizenship (Oxford University Press, 1979), pp. 211 and 268 online (on male citizenship as it relates to marrying citizen women) et passim. ("children born of two Roman citizens") indicates that a Roman woman was regarded as having citizen status, in specific contrast to a peregrina.