Louis II was Prince of Monaco from 1922 to 1949. Born Louis Honoré Charles Antoine Grimaldi in Baden-Baden, Germany, he was the only child of Prince Albert I of Monaco and Lady Mary Victoria Hamilton. His mother was a daughter of William Alexander Anthony Archibald Hamilton, 11th Duke of Hamilton, and his wife, Princess Marie Amélie Elizabeth Caroline of Baden.
On 26 June 1922, Prince Albert I died in Paris. Louis Grimaldi ascended to the throne as Louis II, Prince of Monaco. While his reign never achieved the grandeur of his father, Louis II left an indelible imprint on the tiny principality. In 1924 the Monaco Football Club was formed and in 1929, the first Grand Prix of Monaco automobile race was held.
Prince Louis II died in 1949 in the Prince's Palace and is buried at the Saint Nicholas Cathedral in Monte Carlo, Monaco. His widow, Ghislaine, Dowager Princess of Monaco, died on 30 April 1991 in Paris, where she was interred in the Passy Cemetery.
Hereditary Princess Charlotte had ceded her succession rights to her son, Rainier, in 1944, at which time he became Hereditary Prince. When Louis died five years later, he was succeeded by his grandson, Prince Rainier III.