Cathern \c(a)-the-rn\ as a girl's name is a variant of Catherine (Greek), and the meaning of Cathern is "pure".
The baby name Cathern sounds like Catheryn, Catherin, Catheren and Catheirn. Other similar baby names are Katheryn, Katherin, Cathryn, Cathleen, Cathiryn, Cathirin, Catherinn, Catherina, Cathenne, Cathelin, Catharin and Catreen.