Complex sentence: In addition to her own observations, she gives those of her mother, and those of another noble lady, Jeanne d'Harcourt, married in 1391 to the Count William de Namur, who had been considered the best authority on court etiquette in the kingdom of France.
Split into simpler sentences: In addition to her own observations, she gives those of her mother, and those of another noble lady, Jeanne d'Harcourt, married in 1391 to the Count William de Namur. She had been considered the best authority on court etiquette in the kingdom of France.