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- Burl Ives, American actor and singer, Magnolia (now Magnolia-La Cumbre) Lodge No. 242, California
- Henry Irving, noted British actor of the Victorian era
- James B. Irwin, American astronaut and engineer. He served as Lunar Module pilot for Apollo 15, the fourth human lunar landing; he was the eighth human to walk on the Moon. Member of Tejon Lodge No. 104, Colorado Springs, Colorado.
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