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Cognomen Shallo (Shallo ) , all over the world, is a rare last name. The family name Shallo is habitual in Sub-Saharan Africa, particularly Kenya, where it is a rare surname, Ethiopia, and Tanzania, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in Kenya, Ethiopia, and the United States. Also, Shallo is the forename as well as the last name.