The name Frederica is a girl's name of German, English origin meaning "peaceful ruler,". Frederica and is often added to lists like Badass Princess Names and discussed in our forums with posts like "Girls Makeover - Two Middles".
From the experts:
Frederica is an interesting possibility for the parent unintimidated by its old-fashioned formality, and who can appreciate the
vintage charm and verve lurking inside its stuffiness.
The name emerged in eighteenth century Prussia when supporters of King Frederick the Great began to name their daughters in his honor, and is currently reporesented by opera star Frederica von Stade.
Nicknames include the obvious Freddie, plus Rica and Fritzi.