Prince Heinrich of Prussia was born on March 14, 1862, as the younger brother of Kaiser Wilhelm II, the last German Emperor. He served in the Imperial German Navy and held the rank of Admiral. Heinrich was known for his interest in maritime affairs and played a significant role in promoting naval power in Germany. Heinrich married Princess Irene of Hesse, a granddaughter of Queen Victoria, in 1888. The couple had three children and were involved in various charitable activities. Heinrich's life was marked by his dedication to the navy and his family, reflecting the values of the German aristocracy during his time.