Yes
Iceland was ruled by Denmark during World War I under King Christian X.
The real-life King in Number the Stars was King Christian X.
In "Number the Stars" by Lois Lowry, King Christian X is the king of Denmark during World War II. He is known for his symbolic resistance to the German occupation of Denmark, including wearing a yellow star in solidarity with Danish Jews. His actions helped to inspire the Danish people to protect and rescue their Jewish neighbors during the Holocaust.
King Christian X was the king of Denmark during WW2. He feared Germany would destroy his country, so he protected it by surrendering to Nazi officials. That is how Denmark became occupied during WW2.
That was Christian the 10th
Christian X was king of Denmark from 1912 to 1947.
King Christian II of Denmark was born on July 1, 1481.
King Christian II of Denmark was born on July 1, 1481.
King Christian III of Denmark was born on August 12, 1503.
King Christian III of Denmark was born on August 12, 1503.
King Christian V of Denmark was born on April 15, 1646.
King Christian VII of Denmark was born on January 29, 1749.