What's the next name in the following series?

Claudia, Thelma, Elizabeth,
Eleanor, Anne, ________
?

Here is the SOLUTION.

THE SOLUTION:

BARBARA

They're the first names of the First Ladies of the United States, starting with:

Claudia "Lady Bird" Johnson
Thelma "Pat" Nixon
Elizabeth "Betty" Ford
Eleanor "Rosalynn" Carter
Anne "Nancy" Reagan, then...

Barbara Bush.