Lefébure, Embroidery and Lace.
Mrs. Bury Palliser, "Embroidery," Encyclopædia Britannica.
St. Giselle, Berthe's sister, founded many convents in Aquitaine and Provence, and taught the nuns all manner of needlework (Lefébure, Embroidery and Lace).
Chronique Rimée, by Philippe Mouskés.
Lefébure, Embroidery and Lace.