Although Its Only Been Around As A Given Name Since The 1950s, Demelza Has An Attractive Historical Feel. This Cornish Girls Name Is Probably Most Recognizable From Winston Grahams Poldark series, With The Heroine Being Named Demelza. It Means "fort On The Hill," And Is The Name Of A Hamlet In Cornwall. Much Like A Hillfort, Demelza Will Look Out For The People Around Her, And Go Above And Beyond To Keep Her Loved Ones Safe And Happy.