Original sentence: Ianthe Elstob was the daughter of a naval officer and his wife Ivy Elstob and the step-daughter of Irving Davis, author of the posthumous A Catalan Cookery Book: a Collection of Impossible Recipes (1969)
Edited sentence: Ianthe Elstob was the daughter of a naval officer and his wife Ivy Elstob and the stepdaughter of Irving Davis, author of the posthumous A Catalan Cookery Book: a Collection of Impossible Recipes (1969)