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Family name Ruthby (Ruthby ) , all over the world, is a very rare cognomen. The last name Ruthby is characteristic of Latin America and the Caribbean, particularly Colombia, where it is a very rare surname, Nicaragua, and Honduras. Measured by absolute frequency, it is commonest in Latin America and the Caribbean, particularly Colombia, Venezuela, and Nicaragua. Also, Ruthby is the forename as well as the last name.
VARIANT | COUNTRY |
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Ruthby | Nicaragua, Philippines, Honduras, Colombia, Venezuela |