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Surname Tyrrell (Tyrrell , Tirel , Þórr) , all around the world, is a common last name. The surname Tyrrell is characteristic of Marshall Islands, where it is a common surname, Ireland, where it is quite a common surname, and Guernsey (explore the name in all countries). Measured by absolute frequency, the name is most common in the United States, the United Kingdom, and France. Very seldom, Tyrrell is the forename as well as the last name.