King Gustaf V was the King of Sweden from 1907 until his death in 1950. He was born on June 16, 1858, and was the son of King Oscar II. Gustaf V played a significant role in modernizing the Swedish monarchy and was known for his interest in sports, particularly tennis. During his reign, Gustaf V witnessed major events, including both World Wars and the rise of democracy in Sweden. He was a constitutional monarch, meaning his powers were limited by the constitution, and he worked to maintain the neutrality of Sweden during conflicts.