Family name Girton (Girton 
) , in the entire world, is quite a rare last name. The cognomen Girton is characteristic of the United States, where it is a rare surname, New Zealand, and Canada, where it is a very rare surname. In absolute terms, it is the most numerous in the United States, the United Kingdom, and Canada.
| VARIANT | COUNTRY |
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| Girton | Australia, Germany, Canada, United Kingdom, United States |
| daisy myrtle girton American alumna of Northwestern University, US (b. 1880) |
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| p. girton English cricketer, GB |
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| alanson girton researcher |
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| david girton American reality television participant, US (b. 1980) |
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