18.
Overview:
Constantine II (Greek: Κωνσταντίνος Βʹ, Konstantínos II; 2 June 1940 ― 10 January 2023) was the last King of Greece, from 6 March 1964 until the abolition of the Greek monarchy on 1 June 1973.
Date of birth: 4 June 1940
Date of death: 10 January 2023
Nationality: Greek
Occupation: Royalty
Gender: Male