I believe this name is like Caden -- its use as a given name is because of its sound (rhyming with Mason. Grayson, and Jason and fitting in with other newly created names like Brayson) and it may not be completely correct to think of all of the variant spellings like Kayson, Caeson, Caison, Kacen, etc. etc. as etymologically deriving from this surname. They may be better thought of as inventions based on popular sounds like Zayden. [noted -ed]
― Anonymous User 5/10/2021
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Reminds me of both the song "The Caissons go Rolling Along" and the phrase "Case in point."