The name Savannah is a girl of Spanish origin meaning "flat tropical grassland". A place with a deep southern accent, Savannah was obscured for a while, with others of its genre, on the heels of the best-selling book Midnight in the Garden of Good and Evil, set in Georgia. Savannah moss.
Originally a substitute for abused Samantha, Savannah is now becoming too abusive, long ago among the top girls starting with S.
Prior to that, there was Savannah in the novel and the movie Prince of the Tide, in the best-selling novel Terry McMillan and the film The Waiting for a Trance, played by Whitney Houston and even before that, in a 1982 film. called Savannah Smiles.
Savannah has actually been on the popularity list since records started being kept in the 1880s; she's been in the Top 100 since 1993. The Marcia Cross of desperate housewives chose Savannah for their twin daughter and that was the name of Queen Elizabeth's first great-grandchild. And Savannah Guthrie can be seen every morning on the Today Show.
source : Savannah name meaning