Ad uxorem, i, 7 and 9: non aliud dicendum erit secundum matrimonium quam species stupri.
Jerome, Epist., 123. See also id., Epistola de viduitate servanda, Migne 22, p. 550, and the Epist. de monogamia, Migne, 22, p. 1046. Ambrose, de viduis liber unus, Migne, 16, p. 234. Cf. Alanus de Insulis in Migne, vol. 210, p. 194: Vidua ad secundas nuptias non transeat.
See, e.g., St. Cyprian, de habitu virginum. Tertullian, de virginibus velandis and de cultu feminarum. Treatises on the way widows should dress were written, among others, by St. Paul of Nolan, Epist. 23, §§ 133-135—Migne 61; Augustine, St. Fulgentius Rusp., St. Paulinus Aquil., and St. Petrus Damianus.