Family name Birkby (Birkby 
) , throughout the world, is a rare cognomen. The family name Birkby is characteristic of Bermuda, where it is quite a rare surname, the United Kingdom, where it is a rare surname, and Australia. In absolute terms, it is the most numerous in the United Kingdom, the United States, and Australia.
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| Birkby | Canada, Australia, United States, United Kingdom, South Africa |
| noel phyllis birkby architect (1932-1994), US (b. 1932) |
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| robert birkby American adventure guide, author, photographer, speaker and trail designer., US (b. 1950) |
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| ian birkby English rugby league footballer, GB (b. 1961) |
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| john g. birkby British antiquary, GB |
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| james birkby (1557-1610) of York |
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| edwin birkby Flight Sergeant in Royal Air Force Volunteer Reserve, British Army |
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| faye birkby GB (b. 1992) |
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