Theda doesn`t appear in 2007`s top-1000 name list.
The last time Theda appeared in the top-1000 was 68 years ago, in 1940. It ranked #741 in that year. . 1920 was a `top year` for the name Theda. (Based on 128 years of name history) In that year it ranked #385. Our records go back to 1880

Year	Rank	Rank
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1950	---
1940	741
1930	683
1920	385
1910	---
1900	962
1890	---
1880	935