Cognomen Sewter (Sewter 
) , around the world, is a rare surname. The surname Sewter is habitual in Australia, where it is a rare surname, the United Kingdom, and New Zealand, where it is a very rare surname. In absolute terms, it is commonest in the United Kingdom, Australia, and the United States. Much less frequently, Sewter is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Sewter | Canada, United Kingdom, Nigeria, United States, Australia |
| e. r. a. sewter British byzantinist (1907-1976), GB (b. 1907) |
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| a. c. sewter British art historian (1912-1983), GB (b. 1912) |
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| john baron sewter Peerage person ID=216458 |
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| j. baron sewter former vice-chair of the Royal Television Society |
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Mr, Steve, Chris, Carla, Carol, Colin, Bruce, Karen, Kelly, Paula, Robyn, David, Lance, Lewis, Linda, Jenny, Nikki, Harry, Fiona, Monica, Sharon, Andrew, Susan, Shaun, Sarah, Meryl, Ms, Seb, Ali, Tom, Tim, Zoe, Mary, Mark, Sara, Sage, Adrian, Alex, Paul, Gina, Liam, Lucy, Jane, Jack, John, Troy, Olga, Mozia, Anne, and Claire