ESC Name Rank Total Searching... No names found Try searching for: Emma, Liam, Olivia, Noah... 👧As Girl Name 1904 First Year 1941 Last Year 1926 Peak Year #2872 Peak Rank 114 Total Count 17 Years Active 👦As Boy Name 1903 First Year 2011 Last Year 1917 Peak Year #2956 Peak Rank 49 Total Count 9 Years Active 🌍 ## Meaning & Origin of Fidelis What this name means, where it came from, and how it has traveled across cultures. Fidelis is a given name and surname. The equivalent is Fidélis in Portuguese or Fidel in Spanish. Source: [Wikipedia ](https://en.wikipedia.org/wiki/Fidelis%5F%28name%29) (CC BY-SA 3.0). [Read more → ](https://en.wikipedia.org/wiki/Fidelis%5F%28name%29) ### Cultural Origins (via Behind the Name) * Ancient Roman 📖 ## The Story of Fidelis ### As a girl name Fidelis first appeared in U.S. Social Security Administration records as a girl name in 1904, with 7 babies given the name that year. The name hit its high-water mark in 1926: 11 births, good for #2,872 nationwide. The 1920s were its strongest decade, accounting for roughly 46% of all recorded Fideliss. Its most recent appearance in the national data came in 1941 (5 births); the name has since faded from the published rankings. In total, more than 114 Fideliss have been born in the U.S. since records began in 1880, spanning the 1900s through the 2020s. ### As a boy name The earliest SSA record of Fidelis as a boy name dates back to 1903, when 5 babies received it. 1917 was its biggest year on record, with 8 newborns named Fidelis — #2,956 in the national rankings. The 1910s were its strongest decade, accounting for roughly 49% of all recorded Fideliss. Its most recent appearance in the national data came in 2011 (5 births); the name has since faded from the published rankings. In total, more than 49 Fideliss have been born in the U.S. since records began in 1880, spanning the 1900s through the 2020s. ## Popularity Over Time Girls Boys ## Popularity by State 👧 Girls 👦 Boys ME WA MT ND MN WI MI NY VT NH MA OR ID SD IA IL IN OH PA NJ CT RI CA NV WY NE MO KY WV VA MD DE DC UT CO KS AR TN NC SC AK AZ NM OK LA MS AL GA HI TX FL Top 10 11-50 51-100 101-500 500+ No data 🎶 ## Names that sound like Fidelis Phonetically similar names — useful when Fidelis is the vibe but a different syllable count or letter feel might suit better. Linked entries have a profile on Peek a Name. * Fatalis * Fetalis * Foodless * Fadeless * [Fidelio](/fidelio) * Fuddles * Fedeli * Federalists * Fellas * Fidelity * Fatless * Footless Source: [Datamuse ](https://www.datamuse.com/api/). Phonetic similarity ranking, not curated. ❓ ## Frequently Asked Questions about Fidelis What does the name Fidelis mean? Fidelis is a given name and surname. The equivalent is Fidélis in Portuguese or Fidel in Spanish. What is the origin of the name Fidelis? Fidelis has roots in the following cultural and linguistic traditions: Ancient Roman. How popular is Fidelis in 2026? In 2026, Fidelis ranks #4,421 among girls' names in the U.S., with 5 babies given the name that year. When was Fidelis most popular? Fidelis reached its peak popularity in 1926, ranking #2,872 that year with 11 babies given the name. Is Fidelis a unisex name? Yes — Fidelis is used for both girls and boys in U.S. records, with about 70% of Fideliss assigned female and 30% assigned male historically. What names go well with Fidelis? Names that share a similar style or popularity range with Fidelis include Minette, Elzena, Hiawatha. These pairings are based on rank proximity and naming era in U.S. data. ## Similar Names ### 👧 Similar Girl Names [👧MinettePeak #2872](/minette)[👧ElzenaPeak #2872](/elzena)[👧HiawathaPeak #2872](/hiawatha)[👧LurleenPeak #2872](/lurleen) ### 👦 Similar Boy Names [👦PolkPeak #2956](/polk)[👦BirgerPeak #2956](/birger)[👦MontfordPeak #2956](/montford)[👦OdomPeak #2956](/odom) ## About the name Fidelis Fidelis is a unisex baby name tracked by the U.S. Social Security Administration. It first appeared in SSA records in 1904 and has accumulated 114 births in the dataset. Fidelis's peak popularity came in 1926 when it ranked #2,872\. Use the chart and map above to compare Fidelis's trajectory across years and U.S. states, or browse the related names section to discover similar choices. ### Continue exploring * [ Top names of 1926 → ](/year/1926) * [ Names of the 1920s → ](/decade/1920s) * [ Names starting with "F" → ](/letter/f) * [ Browse all girl names → ](/names/girls) * [ Top names of 2026 → ](/year/2026) * [ Browse unisex names → ](/names/unisex) Data sources * Birth statistics (counts, ranks, years 1880–2026) — U.S. [Social Security Administration ](https://www.ssa.gov/oact/babynames/). Predictions for years not yet released by SSA are computed by Peek a Name from historical trends; we update with official data as soon as it ships. * Etymology, cultural origins, and related forms — [Behind the Name ](https://www.behindthename.com/) (used under their public API terms). * Meaning prose and editorial summary — [Wikipedia ](https://en.wikipedia.org/) article extracts, licensed under [CC BY-SA 3.0 ](https://creativecommons.org/licenses/by-sa/3.0/). * Predicted nationality distribution — [Nationalize.io ](https://nationalize.io/). * Phonetically similar names — [Datamuse ](https://www.datamuse.com/api/). Peek a Name aggregates and presents the above data for informational purposes. Statistical predictions and external attributions are clearly labelled where shown; we make no guarantee of accuracy beyond what each source provides.