Algernon Sydney (or Sidney), (January 1623 - December 7 1683), was an English politician, political theorist, and opponent of King Charles II of England. A son of Robert Sidney, 2nd Earl of Leicester, and the great-nephew of Sir Philip Sidney, he is thought to have been born at Penshurst Place in Kent. During the English Civil War, he joined the army of Parliament, but became critical of Oliver Cromwell's leadership. Wikipedia
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