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Around the world, Gerontius (Gareth , Geraint , Геронтий ) is a common boy's first name. The forename Gerontius is characteristic of Saint Kitts and Nevis, where it is quite a common boy's name, the United Kingdom, and Ireland (explore the name in all countries). Measured by absolute frequency, the name is most common in the United Kingdom, South Africa, and the United States. Much less frequently, Gerontius is the last name as well as the forename.
Gerontius is also a popular name for the fictitious and mythical characters: Gerontius Took , the Middle-earth, The Hobbit; Gareth , the knight of the Round Table in fiction, Arthurian romance; Gareth Landrock , the fictional character from Is It Wrong to Try to Pick Up Girls in a Dungeon?; Gareth Bryne , the fictional character from The Wheel of Time and Gareth Mallory , character in Skyfall, and in many other works.