See also the related category hebrew.
Kaethen is not regularly used as a baby name for boys. It is not listed in the top 1000 names.
Baby names that sound like Kaethen include Kaethan, Kadan, Kaithan, Kaithen, Kaithon, Kathan (English), Kathen, Kathon, Kaythan, Kaythen, Keaten, Keathen, Keatin, Keatton, Keatun, Kedam, Keeten, Keethan, Keeton, and Keitan.
† approx English pronunciation for Kaethen: K as in "key (K.IY)" ; EH as in "ebb (EH.B)" ; TH as in "theme (TH.IY.M)" ; AH as in "mud (M.AH.D)" ; N as in "knee (N.IY)"