Rather than Georgia or Georgina. Sounds very vintage/antique to me and i really like the name.
And i have been playing close attention to Colin Firth’s pronounciation and am very sure that in P&P he refers to “Geor-jee-aanah Darcy”, in contrast to the the Whig pronounciation of “George-aina”, in the Keira K film about the Duchess of Devonshire.