Surname Thornwell (Thornwell 
) , around the world, is a rare family name. The cognomen Thornwell is habitual in Northern America, particularly the United States, where it is a very rare surname, and Canada, where it is an extremely rare surname. Much less frequently, Thornwell is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Thornwell | United Kingdom, United States, Canada |
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james henley thornwell American theologian, US (b. 1812) |
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sindarius thornwell American basketball player, US (b. 1994) |
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Al, Jalen, Jerel, Jimmy, Tommy, Tsdiquah, Emery, Ebony, Marlon, Morlan, Shamya, Shayla, Sierra, Alicia, Albert, Almire, Andrea, Angela, Carmen, Calvin, Bryant, Kyntoya, Jason, James, Linda, Laura, Bk, Rob, Vie, Mary, Adam, Rose, Ryan, Tori, Marie, Allen, Regina, Annie, Aaron, Craig, Kelli, Rubye, Denis, Derek, Davin, Diana, Diane, Donna, Ashby, and Rither