Philip, Duke of Mecklenburg Doberan Minster. Philip, Duke of Mecklenburg Philip, Duke of Mecklenburg, sometimes called "Philip I" (12 September 1514 - 4 January 1557) was a Duke of Mecklenburg-Schwerin. He was the youngest son of Henry V, Duke of Mecklenburg, and Helen of the Palatinate, a daughter of Philip, Elector Palatine. As a result of an injury at a tournament he was mentally ill for many years. After Henry V's death in 1552, he lived at the court of Duke Ulrich of Mecklenburg in Güstrow, where he died. Whether he ruled actively is questionable in the light of his disability. He was buried
Prince William Henry, Duke of Gloucester and Edinburgh House in London in 1805 and was succeeded as duke by his son William Frederick, who went on to marry his cousin Princess Mary in 1816, meaning that he and Sophia then received the style of Royal Highness. His peerages were gazetted on 17 November 1764. William was granted use of the arms of the kingdom, differenced by a "label argent of five points, the centre bearing a fleur-de-lys azure, the other points each bearing a cross gules". Prince William Henry, Duke of Gloucester and Edinburgh Prince William, Duke of Gloucester and Edinburgh, (William Henry; 25 November 1743 – 25