A widowed peeress, an avowed enemy of the old Duke of Omnium. and a patroness of Mark Robarts. Her ambition for her only son led her to desire his marriage with the beautiful Griselda Grantly, but Griselda was looking for a more splendid match, and Lord Lufton loved Lucy Robarts. Lady Lufton objected to her son's love for Lucy, but when she came to love her herself, she asked her to honor the family by joining it. Most prominent in Framley Parsonage.