Seymore is a very rare variant of Seymour that was most common in the 1920s and has all but disappeared.
Seymore is a boy name. It last appears in U.S. records in 1946. Seymore first appears in 1912 and peaked in 1920 (16 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1946 | 6 | — | #3,478 |
| 1943 | 5 | — | #3,972 |
| 1942 | 8 | — | #2,914 |
| 1939 | 6 | — | #3,436 |
| 1938 | 10 | — | #2,462 |
| 1937 | 5 | — | #3,937 |
| 1936 | 7 | — | #3,109 |
| 1935 | 8 | — | #2,912 |
| 1933 | 8 | — | #2,964 |
| 1932 | 11 | — | #2,444 |
| 1931 | 7 | — | #3,356 |
| 1930 | 9 | — | #2,986 |
| 1929 | 5 | — | #4,458 |
| 1928 | 9 | — | #3,047 |
| 1927 | 6 | — | #4,144 |
| 1926 | 10 | — | #2,882 |
| 1925 | 9 | — | #3,118 |
| 1924 | 14 | — | #2,336 |
| 1923 | 11 | — | #2,753 |
| 1922 | 10 | — | #2,975 |
| 1921 | 13 | — | #2,487 |
| 1920 | 16 | — | #2,116 |
| 1919 | 14 | — | #2,247 |
| 1918 | 7 | — | #3,663 |
| 1917 | 8 | — | #3,170 |
| 1916 | 11 | — | #2,514 |
| 1915 | 8 | — | #3,035 |
| 1914 | 6 | — | #3,214 |
| 1913 | 6 | — | #2,763 |
| 1912 | 6 | — | #2,503 |