Cognomen Grubaugh (Grubaugh 
) , in the entire world, is quite a rare surname. The family name Grubaugh is characteristic of the United States, where it is a rare surname, New Zealand, where it is a very rare surname, and Canada. Measured by absolute frequency, it is commonest in the United States, Germany, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Grubaugh | New Zealand, Canada, United States, Germany |
| stephen gayle grubaugh Ph.D. The University of Chicago 1982 (b. 1952) |
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| nathan d. grubaugh researcher |
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