Creature (English): “Living being,” from the Latin creatura. Given to infants who survived just long enough to be baptized. At least one such infant, female Creature Cheseman, survived into adulthood. Other forms were Creature-of-Christ and Creature-of-God.
Calomaria (Italian): “Beautiful Maria,” from the Greek kalos (beautiful) and the name Maria.
Caradonna (Judeo–Italian): “Precious lady,” from the Latin cara (precious, dear, beloved, costly, valued) and Italian donna (lady).
Chichäk (Khazar): “Flower.”
Christoffelina (Flemish): Feminine form of Christopher.
Coblaith (Irish): “Victorious sovereignty.”
Comitessa (English): “Countess,” from the Latin comitissa.
Crestienne (French): Christian.
Cristofana (Tuscan Italian): Feminine form of Christopher.
Calandro (Italian): “Beautiful man,” from the Greek kalos andros. The feminine form, Calandra, is a rarely-used modern name.
Chedomir (Slavic): “Child of peace” and “child of the world,” from roots chedo (child) and miru (world, peace). The modern form Čedomir is Macedonian, Serbian, and Croatian.
Conomor (Breton): Possibly derived from *Cunomāros, a Brythonic name which in turn derived from Common Celtic roots *kwon- (hound) or *kuno- (high), and *māros (great). This name was borne by 6th century King Conomor the Cursed, who appears as a villain in Breton folklore. He’s believed to be the inspiration for Bluebeard, and King Mark of Cornwall in the tale of Tristan and Isolde.
Cresques (Judeo–Provençal, Judeo–Catalan, Occitan): Form of Latin Crescens, from crescere (to grow). It also means “growing,” from Catalan adjective creixent and verb créixer (to grow). In Medieval Occitania, it was a form of the Hebrew Tzemach.