Cognomen Gieren (Gieren 
) , all around the world, is a rare last name. The cognomen Gieren is characteristic of Germany, where it is a rare surname, New Zealand, where it is a very rare surname, and Chile. In absolute terms, it is the most numerous in Germany, Brazil, and Chile. Much less frequently, Gieren is the forename as well as the last name.
| wolfgang gieren Dr. rer. nat. Rheinische Friedrich-Wilhelms-Universität Bonn 1975 |
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| simona gieren |
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| stefan gieren film producer |
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