Oceanus was the Titan in ancient Greek mythology who rules what they thought was the body of water that surrounded the Earth.  Oceanus was, appropriately enough, the name of the baby born on the Mayflower. Modern variations include Ocean, Oceana, and Oceane, a popular <a href="https://nameberry.com/baby-names/162/French-Names">French name</a> for girls.  

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Oceanus

Greek

Ocean

46 names similar to Oceanus