Which King reigned in Britain from 1901 to 1936?

King Edward VII reigned from the death of his mother, Queen Victoria in 1901, until his own death in 1910.

King George V reigned from the death of his father, King Edward VII in 1910, until his own death in 1936.

King Edward VIII, who was never crowned, reigned from the death of his father, King George V in January 1936, until his abdication in December 1936.

King George VI reigned from the abdication of his brother, King Edward VIII in 1936, until his own death in 1952.