The prince is styled His Royal Highness. His Royal Highness" The Prince John". Lalla Salma is styled as Her Royal Highness Princess Lalla Salma. The sultan subsequently assumed the title "His Majesty", rather than the previous "His Royal Highness". Hisahito is styled as His Imperial Highness Prince Hisahito of Akishino. Elizabeth became styled "Her Royal Highness The Duchess of York". He was born with the title of His Royal Highness Prince Yi Gong. Baron Carrickfergus, with Catherine becoming "Her Royal Highness The Duchess of Cambridge" after the wedding. Upon marriage, Sarah became styled "Her Royal Highness" The Duchess of York. Adolphus was styled "His Serene Highness" Prince Adolphus of Teck at birth. She is usually styled as "Her Royal Highness The Duchess of Cambridge". On marriage, Catherine assumed the style "Her Royal Highness The Duchess of Cambridge". The Prince is styled "His Serene Highness". Others favored the variant of "Electoral Highness" or the lesser "Excellency". Her Imperial Highness Princess Takamado is the honorary president.