George I of Greece reigned as the king of Greece from 1863 until his murder in 1913. During his reign of nearly 50 years, which is the longest in the history of modern Greece, George helped expand Greece's territory significantly. During his reign, Greece also became increasingly prosperous and attained a popular place on the European stage.
Christian IX of Denmark was King of Denmark from 1863 to 1906, having claimed the throne following the death of King Frederick VII. During his early reign, the Danish saw defeat in the Second Schleswig War and lost several duchies. Recovering from a tumultuous start, he reigned over his nation for several years and was respected by his people.
Frederick IX of Denmark reigned as the king of Denmark from 1947 until his death in 1972. Under his reign, the Danish society experienced a rapid change; the economy received a massive boost in the 1960s which allowed women to enter the labor market. In 1982, Frederick's statue was unveiled in Copenhagen, ten years after his death.
Guthrum was a 9th-century king of East Anglia. A Great Summer Army leader, his aim was to unite with the Danish Army and conquer the Anglo Saxon kingdoms. The combined army won a few battles but lost at Edington, following which Guthrum was baptised and ruled East Anglia as Æthelstan.
Frederik, Crown Prince of Denmark is the first in order of succession to the Danish throne. Frederik has various interests that range from climate change to sports. He often encourages the people of Denmark to stay active and healthy. He has also established the Crown Prince Frederik's Foundation, which aims to provide financial support to students and encourage scientific expeditions.