Kate Middleton, Prince William are speculated to have code names which they use during their spare time
The Duke and Duchess of Cambridge, Prince William and Kate Middleton are rumoured to have secret code names, mainly used on excursions and in their spare time.
When Middleton travels abroad she goes by the nickname Daphne Clark and William is known by Alias Danny Collins, as per Express.
Both hold the initials of DC which is the same as their Duke and Duchess of Cambridge titles.
According to The Mirror, Middleton allegedly let one of her moniker escape during a shopping spree in London.