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 Philip, Duke of Edinburgh in male line to the Danish House of Glücksburg, originally a cadet branch of the House of Oldenburg, which held several thrones and provided consorts to rulers of Russia and Great Britain in the 19th and 20th centuries. In 1993, scientists were able to confirm the identity of the remains of several members of Empress Alexandra of Russia's family, more than seventy years after their massacre in 1918, by comparing their mitochondrial DNA to living matrilineal relatives, including Prince Philip, her maternal grandnephew. Philip, Alexandra and her children are all descended from Princess Alice of the United Kingdom, the daughter