However, they also have the titles Earl and Countess of Strathearn whenever they visit Scotland (viaPeople).
According toCambridge News, Kate and William received their titles Duke and Duchess of Cambridge from Queen Elizabeth.
The titles come from the city of Cambridge, which is one of the six royal dukedoms.

Traditionally, the hierarchy indicated which people had the most political and landowning power in old Britain.
The highest-ranking members of the royal family, however, receive more than one royal title.
AsExpressreports, Kate and William also received regional titleswhen they got marriedin 2011 (viaPage Six).

However, Kate and William have another set of titles.
It’s important to note that some of these titles may change ifPrince Charlesbecomes the King of England.