Where does “Kaelyn” come from?

Kaelyn (English) comes from English Kaylyn, from English Kay, from Latin ka — The name of the letter "K".

Ancestry of “Kaelyn”, step by step

StepLanguageWordMeaning
1EnglishKaylyn—
2EnglishKayderived from several Old and Middle English words; also adopted by immigrants whose surnames began with a K
3LatinkaThe name of the letter "K"
Every word from Latin ka →Every word from English Kay →Every word from English Kaylyn →