According to a letter from Eliza de Feuillide Amoris et Amicitiae .
Eliza de Feuillide is the title of the novel had been derived by Jane Austen from the Latin phrase inscribed on the back of a miniature portrait given to cousin Phylly Walter by Eliza .
According to a letter from Eliza de Feuillide , the title of the novel had been derived by Jane Austen from the Latin phrase inscribed on the back of a miniature portrait given to cousin Phylly Walter by Eliza , Amoris et Amicitiae .