Tabitha http://www.wolframalpha.com/input/?i=tabitha Rise begins right around the second season of _Bewitched_ when the character Tabitha was introduced; peak (maybe coincidentally) appears to be around the short-lived 1977 spinoff series.

Michelle http://www.wolframalpha.com/input/?i=michelle The rise in popularity was probably influenced by the Beatles song (released in December 1965).

Shirley http://www.wolframalpha.com/input/?i=shirley The peak appears to correspond to the height of Shirley Temple's film career in the mid-to-late 1930s.