The Name Game

So we are trying to decide the spelling, and we aren't any closer to agreeing on anything so here are just some things about the her name:

What is means:
Caitlin: "Pure, Beautiful" ( Irish Name )
Tara: means lots of things but my fav is "earth" (Latin Origin)

Alternate Spellings:

Caitlin has 32 variant forms: Kaitlin, Caitlyn, Katelyn, Kaitlan, Kaitleen, Kaitlyn, Kaitlynn, Kaitlynne, Katelyn, Katelynn, Katelynne, Caitilin, Caitlan, Caitland, Caitlann, Caitlinn, Caitlynn, Catelan, Cateline, Catelinn, Catelyn, Catelynn, Catlin, Catline, Kaitlan, Kaitlann, Kaitlin, Kaitlinn, Kaitlyn, Kaitlynn, Katelan, and Katelin

Tara has 11 variant forms: Tarah, Taralyn, Taralynn, Tarra ,Tarrah , Terra, Tera, Terah, Terrah, Tiera and Tierra.

How common are the spellings of Caitlin?