Nowadays they would named "Forrestt" or "Foresst" or somesuch.
When parents get cute with the spelling (or worse, pronunciation), they sentence their kids to a entire life time of correcting people and misspelled documents, awards and the like.
Nah, it'd be Phoryst.
Caitlyn, Katelynn, Catelin, Katelin, Katlyn Caytlyn, Kaytlin
Mickayla, Michela, Michaela, Mikayla, Michala, Mikkayla
Megyn, Megin, Meggan, Mehgyn, Meahgin, Meyhgyn, Meggyn
Weak.