Last name Baylay (Baylay 
) , in the entire world, is a rare cognomen. The surname Baylay is characteristic of Myanmar, where it is a rare surname, the United Kingdom, and Canada, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in the United Kingdom, Myanmar, and the United States. Likewise, Baylay is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Baylay | Myanmar, United Kingdom, Canada, Spain, United States |
| charles frederick rogers baylay (1805-1890) (b. 1805) |
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| edward john lake baylay Peerage person ID=37533 (b. 1882) |
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| oonagh lavinia baylay (1912-1990) (b. 1912) |
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paul dh baylay |
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| armynel mary baylay (died 1876) |
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| emily anne baylay Peerage person ID=691201 |
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| katherine baylay Peerage person ID=310836 |
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| c. e. baylay Peerage person ID=332683 |
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| alison j baylay researcher |
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| william frederick baylay English cleric, died 1845 |
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| anne mervyn baylay 1804 |
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| charles f. r. baylay Peerage person ID=662817 |
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