Everyone knows that Prince William and his brother Harry are keen motorcycle riders.
In 2008, they took part in the Enduro Africa ride to raise funds for orphans in Lesotho and Prince William is the proud owner of a Ducati 1198 superbike.
Their father, Prince Charles, is dead against them riding.
But it’s not un-royal for other family members to also be interested in two wheels. Queen Elizabeth learnt to ride a motorcycle during the war while hubby the Duke of Edinburgh can also ride and has visited the Isle of Man TT.
King George VI, when he was Albert, the Duke of York, was a motorcyclist and entered two bikes in the Brooklands Royal Meeting in 1922, but he did not race.
So, given the royal inclination for motorbikes, there is every chance the newest royal will one day also twist the throttle.
But what name should they call him: Harley is too proletarian, Duke Duc is too twee, Casey is too Australia, Valentino too European, but what about a patriotic Cal to spur on their MotoGP hopeful?
Go to the comments box below and offer your suggestions for royal biker baby names.