Family name Grathoff (Grathoff 
) , in the world, is a very rare surname. The cognomen Grathoff is characteristic of Germany, where it is a very rare surname, and the United States. Very seldom, Grathoff is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Grathoff | Germany, United States |
| richard grathoff German scholar, DE (b. 1934) |
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| dirk grathoff born:1946|died:2000|; Grathoff, Dirk, 1946-2000; Grathoff, Dirk. (b. 1946) |
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| stefan grathoff (b. 1952) |
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