All Birthdays / April / April 21 / John Muir John Muir Naturalist Born 1838 Birthday April 21 Profession Naturalist Nationality Scottish-American Notable Achievement National parks founder Fun Facts 🎂 Birthday Date John Muir was born on April 21 🌟 Share Birthday See who else was born on this day View all → Share This Birthday 🐦 Twitter 📘 Facebook 🔗 Copy Link Explore More All April 21 Birthdays See everyone born on this day April Birthdays Browse the full month Today's Birthdays See who was born today
