Which is true about "Louis Francis Mountbatten"?

Admiral of the Fleet Albert Victor Nicholas Louis Francis Mountbatten, 1st Earl Mountbatten of Burma(25 June 1900 – 27 August 1979) was a British statesman, naval officer, colonial administrator and close relative of the British royal family. He was born in the United Kingdom to the prominent Battenberg family. He was a maternal uncle of Prince Philip, Duke of Edinburgh, and a second cousin of King George VI. He joined the Royal Navy during the First World War and was appointed Supreme Allied Commander, South East Asia Command, in the Second World War. He later served as the last Viceroy of India and briefly as the first Governor-General of the Dominion of India.

In February 1947, Mountbatten was appointed Viceroy and Governor-General of India and oversaw the Partition of India into India and Pakistan. He then served as the first Governor-General of the Union of India until June 1948 and played a significant role in persuading princely states to accede to India. In 1952, Mountbatten was appointed commander-in-chief of the British Mediterranean Fleet and NATO Commander Allied Forces Mediterranean. From 1955 to 1959, he was First Sea Lord, a position that had been held by his father, Prince Louis of Battenberg, some forty years earlier.