24. On his family see Stronski, Folquet de Marseille, p. 15 and 159-172.
25. See G. Paris, La Littérature française au moyen âge, § 128.
CHAPTER VI
26. The best short account of the Albigenses is to be found in vol. i. of H.C. Lea's Histoire de L'Inquisition au moyen âge, Paris, 1903. This, the French translation, is superior to the English edition as it contains the author's last corrections, and a number of bibliographical notes. The Adoptionist theory is stated in the introduction to F.C. Conybeare's Key of Truth, Oxford, 1908. The Chanson de la Croisade Albigeoise, P. Meyer, Paris, 1875, 2 vols., is indispensable to students of the subject. In these works will be found much of the extensive bibliography of the heresy and crusade.
27. Eckbertus, Serm. adv. Catharos, Migne, Patr. Lat., tom. 193. p. 73.
28. Cf. Milman, Latin Christianity, Book IX. chap. viii. p. 85.
29. On religious lyric poetry, see Lowinsky, Zeitschrift für französische Sprache und Litteratur, xx. p. 163 ff., and the bibliographical note to Stimming's article in Gröber's Grundriss, vol. ii. part ii. § 32.
CHAPTER VII
Most histories of Italian literature deal with this subject. See Gaspary's Italian Literature to the death of Dante: H. Oelsner, Bohn's Libraries. See also the chapter, La poésie française en Italie in Jeanroy's Origines. For Dante, see Storia letteraria d'Italia, scritta di una società di professori, Milan, vol. iii., Dante, by Zingarelli. The Troubadours of Dante, Chaytor, Oxford, 1902. Useful are A. Thomas, Francesco da Barberino et la littérature provençale en Italie au moyen âge, Paris, 1883. O. Schultz, Die Lebensverhältnisse der Italienischen Trobadors, Berlin, 1883.