daughter of Frederick Francis III, Grand Duke of Mecklenburg-Schwerin, and Grand Duchess Anastasia Mikhailovna of Russia. She eventually became his queen consort. They had two sons: Prince Frederick (1899–1972), later King Frederick IX of Denmark Prince Knud (1900–1976), later Knud, Hereditary Prince of Denmark The couple were given Christian VIII's Palace at Amalienborg Palace in Copenhagen as their residence and Sorgenfri Palace north of Copenhagen as a summer residence. Furthermore, the couple received Marselisborg Palace in Aarhus as a wedding present from the people of Denmark in 1898. In 1914, the King also built the villa Klitgården in Skagen. Crown Prince On 29 January 1906, King Christian IX died, and Christian's father ascended the throne as King Frederick VIII. Christian himself became crown prince. Reign Accession On 14 May 1912, King Frederick VIII died after collapsing from shortness of breath while taking a walk in a park in Hamburg, Germany. He had been returning from a recuperation stay in Nice, France, and was staying anonymously in the city before continuing to Copenhagen. Christian was in Copenhagen when he heard about his father's demise and acceded to the throne as Christian X. Easter Crisis of 1920 In April 1920, Christian instigated the Easter Crisis, perhaps the most decisive event in the evolution of the Danish monarchy in the twentieth century. The immediate cause was a conflict between the King and the cabinet over the reunification with Denmark of Schleswig, a former Danish fiefdom, which had been lost to Prussia during the Second War of Schleswig. Danish claims to the region persisted to the end of World War I, at which time the defeat of the Germans made it possible to resolve the dispute. According to the terms of the Treaty of Versailles, the disposition of Schleswig was to be determined by two plebiscites: one in Northern Schleswig (Denmark's South Jutland County 1971–2006), the other in Central Schleswig (today part of the German state of Schleswig-Holstein). No plebiscite was planned for Southern Schleswig, as it was dominated by an ethnic German majority and, in accordance with prevailing sentiment of the times, remained part of the post-war German state. In Northern Schleswig, seventy-five percent voted for reunification with Denmark and twenty-five percent for remaining with Germany. In this vote, the entire region was considered to be an indivisible unit, and the entire region was awarded to Denmark. In Central Schleswig, the situation was