List of Famous people born on October 21st

Edmond Moore Hamilton was an American writer of science fiction during the mid-twentieth century.

William Owen Bradley was an American musician and record producer who, along with Chet Atkins, Bob Ferguson, Bill Porter, and Don Law, was one of the chief architects of the 1950s and 1960s Nashville sound in country music and rockabilly.

George Izard was a senior officer of the United States Army who served as the second Governor of Arkansas Territory from 1825 to 1828. He was elected as a member to the American Philosophical Society in 1807.

The Reverend Robert Sherard, 4th Earl of Harborough was a British clergyman who inherited the earldom of Harborough.

George Forbes, 3rd Earl of Granard PC was an Anglo-Irish naval commander and diplomat. He was at the Capture of Gibraltar. He took a very valuable prize ship and was briefly a Governor of the Leeward Islands. He took a role in politics, helping to end Robert Walpole's career, but eventually retired.