AlexandriaCeleste's list "Roman Catholic Inspired Names" of 20 great name ideas: Cosmasina - Gratia!

Roman Catholic Inspired Names

Names that reference Catholic saints, meanings, virtues, apparition sites, Marian, or other nods to Catholicism including trendy, traditional, and unique choices.

Cosmasina

Crewenna

Dymphna – also spelled Dympna – is the distinctive name of an Irish virgin martyr. According to the legend, she was a Celtic princess who fled to Belgium to escape the abusive attentions of her unwell father. After her murder, she was named the patron saint of the mentally ill. 

 Derived from the Old Irish Damhnait, Dymphna has the charming – perhaps woodsy and whimsical – meaning of "fawn" and some of the sounds of stylish Daphne. Despite its classic Irish feel, this name is out of fashion in its native country, with Dymphna last appearing in the Irish stats back in the 1980s.
 
There have been two noted writers with this name, the Australian Dymphna Cusack and the Irish travel writer Dymphna Byrne.

Dymphna

Domina

Domnina

Feminine of Aidan, but now girls would prefer to use the original. 

Edana

Edessa

Emmiliana

Epiphania

Esperanza 

Eurosia

Eusebia

Everild

Fiametta is the pseudonym Italian Renaissance writer Bocaccio gave to his muse in his writing; her real name was most likely Maria d'Aquino. It was also the title of a ballet in the 19th century. This is one of the unusual but not inaccessible <a href="https://nameberry.com/baby-names/505/italian-names-for-girls">Italian names for girls</a>; you can make it even more user-friendly with the cute nicknames Fia or Etta.

Fiametta

Fina is a feminine name with multiple origins, functioning both as a standalone name and as a diminutive form of names ending in '-fina' such as Serafina or Josefina. In Italian and Spanish contexts, it's often short for Josefina (Joseph's feminine form) or Serafina (meaning 'burning one'). In Catalan culture, it honors Santa Fina (Serafina), a 13th-century Italian saint. The name carries a delicate simplicity with its brief two-syllable structure while still connecting to deeper historical and cultural traditions. Its concise nature makes it appealing in modern naming trends that favor shorter names. Though uncommon in English-speaking countries, Fina has an international appeal with its easy pronunciation across languages and its sweet, feminine quality.

Fina

One of the most attractive and unusual spins on the "Fran" franchise. 

Franca

Fanchea

Farina

Georgeina is a feminine name that serves as an elaborate variation of Georgina, which itself is the feminine form of George. The name ultimately derives from the Greek 'georgos,' meaning 'farmer' or 'earth-worker.' The additional 'e' in Georgeina creates a slightly altered pronunciation and distinctive appearance. This name carries the dignified history associated with George, including connections to British royalty and the patron saint of England, while offering a decidedly feminine form. Though relatively uncommon compared to Georgina or Georgia, Georgeina appeals to those seeking traditional names with a unique twist. The name projects elegance and classical charm while maintaining a connection to its more familiar counterparts. Its rarity makes it special without being completely unfamiliar to most people.

Georgeina

Although the saintly Gratia was male -- Blessed Gratia of Kotor -- this name feels quite female today.