Catherine, Duchess of Cambridge was born January 9, 1982 in Rome.
 Currently, there are thirty-five dukedoms in the Peerage of England, Peerage of Scotland, Peerage of Great Britain, Peerage of Ireland and Peerage of the United Kingdom, held by thirty different people, as three people hold two dukedoms and one holds three (see List of dukes in the peerages of Britain and Ireland)
 Dukes in the United Kingdom are addressed as "Your Grace" and referred to as "His Grace"

