The present volume treats the descendants of Lady Elizabeth Mortimer, wife first of Henry, Lord Percy, K.G., called "Hotspur," and secondly, of Thomas, Lord Camoys, K.G. The plan followed is identical with that adopted in the Clarence and Exeter volumes. The lines from Lady Elizabeth are traced out in a series of tables until about the beginning of the nineteenth century; then in the body of the book the descendants of the various persons last named in the tables are set out in the order of primogeniture. The full dates of birth, marriage, and death are given, and in the cases of married persons the names of the husband and wife. Lady Elizabeth Mortimer was the elder daughter of Edmund (Mortimer), 3rd Earl of March, by his wife the Lady Philippa, only child and heir of Lionel (of Antwerp), Duke of Clarence, the eldest of the four sons of King Edward III of whom issue now survives. With this part is included a supplement containing some further descendants of the Duchess of Exeter and the Countess of Essex, which the compiler has since succeeded in tracing. The supplement and text each contain separate indices. This is a must for anyone researching royal bloodlines