Federicus

Federicus is a Latin masculine given name. It is the Latinized form of the Germanic name Frederick (or variants thereof). The name means "peaceful ruler" or "powerful peacemaker," derived from the Germanic elements fridu (peace) and ric (ruler, power).

Federicus was a popular name among European royalty and nobility, especially in the Holy Roman Empire and later in various German-speaking regions. It is the Latin form most commonly used in historical documents and scholarly works when referring to individuals named Frederick.

The use of Federicus as a personal name is less common in modern times, with the vernacular forms of Frederick being preferred in most countries. However, it remains relevant in historical and genealogical contexts. It can also appear in formal Latinized records or ceremonial settings.