Nature Names for Gentlemen

Theron is best known these days as the surname of actress Charlize, but it does have a long history as a first name, ranking in the Top 500 in the early part of the 20th century and only dropping out of the Top 1000 in the early 1990s. Theon is a similar name made familiar by the popular series Game of Thrones: Might it and Theron rise in tandem?