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Family name Pieru (Пиеро , Pieru
, פיירו
) , worldwide, is a very rare last name. The cognomen Pieru is characteristic of Finland, where it is a very rare surname, Israel, and Russia, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in India, Finland, and Russia. Also, Pieru is the forename as well as the last name.