John Holland

Several notable persons in history have been named John Holland:

• John Holland (1350 - 9 February 1400), Duke of Exeter, was half-brother to Richard II of England and second husband of Elizabeth Plantagenet, daughter of John of Gaunt.
• John Philip Holland (1840 -1914) designed submarines for the U.S. Navy.
• John Henry Holland (1929 - ) was a pioneering founder of the optimization methods now known as genetic algorithms.