I far prefer
Georgina.
Georgiana is 18th-century pedantic.
Like the poet Keats, I pronounce it George-ee-anna. Four syllables. People who say Jor-Jane-a are deluded; it seems that one family once used that, and the sheep have followed. (Keats wrote a poem to a girlfriend,
Georgiana. Then he changed it to fit another girlfriend, and
Georgiana became 'dearest
Emma'. Four syllables.)