The name Sophronia is a girl's name of Greek origin meaning "sensible, prudent". Sophronia and is often added to lists like Greek Baby Names for Modern Kids and discussed in our forums with posts like "A brother or sister for little Jack or Olivia".
From the experts:
A name some people first encountered in the old children's book series The Five Little Peppers, in which Sophronia, the youngest of the Peppers is nicknamed Phronsie.`It was also used by Dickens in two of his novels: The Old Curiosity Shop and Our Mutual Friend.
An archaic option for elaborating on Sophie/Sophia.