The Grand Duke of Mecklenburg-Schwerin, Friedrich Franz IV wrote to Charles Michael informing him that his cousin Adolf Friedrich VI of Mecklenburg-Strelitz had died on 23 February 1918 and that as he was first in the line of succession he was being called to the throne.
Duke Charles Louis Frederick of Mecklenburg: 14. Charles II, Grand Duke of Mecklenburg-Strelitz: 29. Princess Elisabeth Albertine of Saxe-Hildburghausen: 7. Louise of Mecklenburg-Strelitz: 30. Prince George William of Hesse-Darmstadt: 15. Princess Friederike of Hesse-Darmstadt: 31. Countess Maria Louise Albertine of Leiningen-Falkenburg-Dagsburg