Cognomen Ferrers (Ferrers 
) , all around the world, is a rare family name. The cognomen Ferrers is characteristic of Guernsey, where it is quite a common surname, Spain, where it is a rare surname, and Israel, where it is a very rare surname. Measured by absolute frequency, it is commonest in Spain, the United Kingdom, and Guernsey. Much less frequently, Ferrers is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ferrers | Guernsey, United Kingdom, Australia, Israel, Spain |
| robert de ferrers, 1st earl of derby English noble, GB (b. 1062) |
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| margaret ferrers, countess of derby Countess of Derby, GB (b. 1114) |
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william de ferrers English Earl (b. 1193) |
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| william de ferrers, 4th earl of derby English Earl (b. 1168) |
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robert de ferrers English noble, GB (b. 1239) |
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| william de ferrers English Earl, IL (b. 1200) |
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| william de ferrers Younger son of William Ferrers, 5th Earl of Derby, landowner in Leicestershire, England (b. 1240) |
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| elizabeth ferrers British noble (b. 1250) |
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| john de ferrers English peer, GB (b. 1271) |
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| william de ferrers English nobleman (b. 1272) |
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| henry de ferrers peer (b. 1303) |
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| robert de ferrers English Baron, GB (b. 1309) |
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| john de ferrers, 3rd baron ferrers of chartley English Baron (b. 1331) |
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| william de ferrers English nobleman (1333–1371), GB (b. 1333) |
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| robert de ferrers Baron Ferrers of Wem (b. 1341) |
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