In 2018, 49 is the most common age for an American (U.S.) Art* who is registered male with the Social Security Administration. It is the 3459th most common male first name for living U.S. citizens. *as a first name, not a nickname.
― Anonymous User 10/19/2018
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This name is also used in The Netherlands. There, it can also be a short form of Arthur, but it is more often a short form for Arnout or a variant form of Aart.
*as a first name, not a nickname.