Important insights into the life and character of Lord Hoo are preserved in a Book of Hours which was made for him around 1444, probably as a gift for his wife Eleanor. It is a French production of 293 folios on vellum, made in Rouen, includes 28 colourful miniatures of religious subjects, and the text, which is of the Sarum Use and employs English, French and Latin, is decorated throughout with ornamental margins. All but one of the miniatures are by one artist, known (from this book) as the "Hoo Master", of which about half are devotional scenes and half narrative subjects. They include patron images (identifiable by heraldry): Lord Hoo prays to the Holy Trinity, a little preceding a scene of the disembowelling of St Erasmus, suggesting that he may have suffered from intestinal troubles. Dame Eleanor prays to the Virgin and Child, and wears a high butterfly headdress, and the arms of Hoo impaling Welles upon her kirtle: just after this, images of St Leonard and St Hildevert (Bishop of Meaux, died c. 680) are inserted, suggesting that she may have been afflicted by mental weakness or epilepsy.