Son of the marsh; son of Case
Kaeson is a modern American invented name, likely a creative spelling of Cason or a combination of the name Case with the popular 'son' suffix. It may also be interpreted as a variant of the English surname Caisson, which refers to a dweller by a marshy area.
Less common today
Kaeson isn't in the latest US Top 1000. It last peaked at #1,903 in 2014.
US births per 5-year period, 1990βpresent (SSA data).