Worldwide, Grenfell (Grenfell 
) is a very rare primarily masculine, but very seldom girly first name. The first name Grenfell is characteristic of Australia, where it is a very rare male name, and the United Kingdom, where it is a very rare mostly masculine, but infrequently girly name. Much more frequently, Grenfell is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Grenfell | United Kingdom, United States, South Africa, New Zealand, Australia |
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pascoe grenfell British businessman and politician (b. 1761) |
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pascoe grenfell British copper smelter (1798–1879) (b. 1798) |
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| pascoe grenfell (1828-1896) (b. 1828) |
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| st. leger murray grenfell (1830-1860) (b. 1830) |
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| pascoe grenfell, 2nd baron grenfell British Baron, GB (b. 1905) |
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| gibson grenfell British QC, GB (b. 1945) |
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