For a Princess: Henrietta Dorothea Elizabeth
Henrietta has not been used since Princess Henrietta Anne, the daughter of Charles I and Henrietta Maria.
For a Prince: Richard John Philip
For a Prince: John
Catherine's great-great-grandfather was named John Harrison.
Catherine's great-great-great-great-grandfather was named John Goldsmith.
Catherine's great-great-great-grandfather was named John Goldsmith.
William's grandfather was named Edward John "Johnnie" Spencer.
For a Prince: Edwin Arthur Michael
Edwin was King of Northumbria.
He reigned 616 to 632 (633).
For a Princess: Philippa Mary Anne
Philippa of Hainault was the Queen Consort of King Edward III.
For a Prince: Geoffrey Ronald Charles
Geoffrey, Count of Anjou, was the husband of Empress Matilda. They were the parents of King Henry II.
Ronald Goldsmith is Catherine's maternal grandfather.
For a Princess: Elizabeth Valerie Victoria
Valerie Glassborrow Middleton is Catherine's paternal grandmother.
For a Princess: Sophia Alice Carole
Sophia, Electress of Hanover was the mother of George I.
For a Prince: Robert Duncan Malcolm
Robert, Duncan, and Malcolm are the names of Kings of Scotland.
For a Prince: Frederick Edward Thomas
For a Princess: Cecily Frederica Elizabeth
Cecily, Duchess of York was the mother of King Edward IV.
For a Prince: Michael Claude Arthur
Claude is the first name of Claude George Bowes-Lyon, 14th Earl of Strathmore and Kinghorne, the maternal grandfather of Queen Elizabeth II.
For a Princess: Claudia Ruth Diana
Claudia is a feminine equivalent of Claude, the first name of the 14th Earl of Strathmore and Kinghorne.
Ruth is the first name of Ruth Roche, Baroness Fermoy, the maternal grandmother of Diana, Princess of Wales.
For a Prince: Ian Charles Cedric
Cedric was King of Wessex.
He reigned from 519 to 534.
For a Princess: Mary Victoria Joan
Joan, the Fair Maid of Kent, was the wife of Prince Edward, the Black Prince, the eldest son of Edward III.
For a Princess: Valerie
Valerie would be in honor of Catherine's paternal grandmother, Valerie Glassborow Middleton.
For a Prince: Richard
Richard of Conisburgh, 3rd Earl of Cambridge, was the second son of Edmund of Langley, 1st Duke of York.
For a Prince: Lionel
Lionel, Duke of Clarence was the son of King Edward III and Queen Philippa.
For a Princess: Constance
Constance Robison Glassborrow is a great-grandmother of Catherine.
For a Princess: Adeliza
Queen Adeliza was the second wife of King Henry I.
For a Princess: Esther
Esther Jones Goldsmith is a great-great-great-grandmother of Catherine.
For a Prince: Athelstan
Athelstan was King of England. He ruled from 924 to 939.