KELLYm & fIrish, English Anglicized form of the Irish given name CEALLACH or the surname derived from it Ó Ceallaigh. As a surname, it has been borne by actor and dancer Gene Kelly (1912-1996) and actress and princess Grace Kelly (1929-1982).
KELSEYf & mEnglish From an English surname which is derived from town names in Lincolnshire. It may mean "Cenel's island", from the Old English name Cenel "fierce" in combination with eg "island".
KELVINmEnglish From the name of a Scottish river, perhaps meaning "narrow water". As a title it was borne by the Irish-Scottish physicist William Thomson, Lord Kelvin (1824-1907), who acquired his title from the river.