Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Duke of Rothesay:

"

Between the 1603 union of the crowns and Edward VII's time as heir apparent, the style "Duke of Rothesay" appears to have dropped out of usage in favour of "Prince of Wales". Queen Victoria mandated the title for use to refer to the eldest son and heir apparent when in Scotland, and this usage has continued since. This may have been as a result, direct or indirect, of the 1822 visit of King George IV to Scotland.[citation needed]