June 19, 1917
King George V has made the following announcement:
"The King has deemed it favorable in the conditions brought about by the war that those Princes of his family who are his subjects and bear German names and titles should relinquish these titles and henceforth adopt British surnames. At the same time and consequent upon this decision the King is pleased to confer peerages of the United Kingdom on the following: The Duke of Teck, Marquis; Prince Alexander of Teck, Earl; Prince Louis of Battenberg, Marquis; Prince Alexander of Battenberg, Marquis."
The Court Circular also included an announcement about the "further abolition of German titles" now held by members of the British royal family.
"Their Highnesses Princess Helena Victoria and Princess Marie Louise of Schleswig-Holstein will henceforth be styled as their Highnesses Princesses Helena Victoria and Princess Marie Louise, respectively."