Thedora is a very rare variant of Theodore that was most common in the 1920s and has all but disappeared.
Thedora is a girl name. It last appears in U.S. records in 1956. Thedora was first reported in SSA data in 1915 and peaked in 1925 (9 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1956 | 5 | — | #6,807 |
| 1954 | 6 | — | #5,693 |
| 1952 | 9 | — | #4,092 |
| 1951 | 6 | — | #5,354 |
| 1950 | 5 | — | #6,027 |
| 1949 | 5 | — | #5,982 |
| 1947 | 5 | — | #6,051 |
| 1931 | 5 | — | #4,902 |
| 1928 | 6 | — | #4,672 |
| 1927 | 6 | — | #4,747 |
| 1926 | 6 | — | #4,787 |
| 1925 | 9 | — | #3,628 |
| 1924 | 6 | — | #4,991 |
| 1922 | 7 | — | #4,393 |
| 1920 | 7 | — | #4,349 |
| 1918 | 5 | — | #5,509 |
| 1915 | 5 | — | #4,885 |