Arthur is bookies’ favourite name for the prince

ARTHUR – ODDS 2/1 A middle name of William and Charles, it would hark back to the legendary king.

JAMES - 4/1 Could be chosen to signify Kate’s affection for her brother.

ALBERT – 6/1 Queen Victoria insisted it was used as a middle name by her descendants in honour of Prince Albert. George VI was Albert, but always known to family as Bertie. PHILIP - 6/1 A tribute to the Duke of Edinburgh. FREDERICK 12/1 The first Duke of Cambridge, Prince Adolphus Frederick, was a son of George III. HENRY - 12/1 William may honour his brother Harry by using his real name.

MICHAEL - 20/1 The name of Kate’s father.

WILLIAM - 25/1 The Duke of Cambridge could name his second son after himself.