Sirlo

surname · Latin script

(measured from records)Officially recorded in 1 country

Sirlo is a surname written in the Latin script, with more bearers in Czechia than in any other country.

  • CZCzechia1 in 630K(measured from records)

carrying the name, as counted by each country's national register. Countries with no figure are shown too: flat where a national register lists the name without counting it, hatched where only our records hold it. One hue, darker where it is more common; hover a country for its figure.

Czechia (measured from records)

17 people

Record sources
6 (measured from records)

corpus datasets behind its best-documented spelling

strongest: reference-verified

1 in 630K (inferred from the name graph)

Czechia

measured from records inferred from the name graph

Spellings & scripts

(measured from records)

2 other spellings are counted as the same name:

Locally spelled Širlo in CZ Czechia.

Spellings marked ● are how people bearing the name write it in our records, and ○ marks a model's transliteration; click a spelling to open its page.

Meaning & origin

No verified etymology recorded for this name yet — the entries below are drawn from usage statistics and the name graph.

Where in the world

(measured from records)

Sirlo counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.

Sorted by bearers: national registers' counts, and Mondonomo's estimates (≈, est.) where no register counts.

Where Sirlo is recorded, by country
CountryMost common spellingSources
CZ Czechia171 in 630K17Širlo6
US United States———Sirlo1
BR Brazil——20——

17 people counted by MVČR — living population register 2017. Exact figures are national registers' own counts, while figures marked ≈ and est. are Mondonomo’s estimates, counted from our sources and calibrated against those registers; hover one for how far to trust it in that country. A dash means neither exists.

Registers cited: MVČR — living population register 2017; Brasil.IO genero-nomes (IBGE Censo 2010 mirror, CC-BY-SA). Figures without a register are Mondonomo estimates; see Methodology.

Country figures for a list of names, at full precision, are available under licence rather than by scraping this table (how that works).

Evidence

(measured from records)

No register attests this spelling yet

None of the official registers or reference works in our corpus lists Sirlo under this spelling. The statistics on this page rest on person records, and the related names are inferred from the name graph.

Register rows as of the 2026-10-09 data build.

Frequently asked questions

In which country does Sirlo have the most bearers?
In Czechia, the national register counted about 17 people named Sirlo, more than in any other country we hold, where it is most often spelled širlo.
Where is Sirlo most common?
Sirlo is densest in Czechia, where the national register counts about 1 in 630 thousand people carrying it.
How common is the name Sirlo?
In Czechia, the national register counted 17 people named Sirlo, about 1 in 630 thousand residents.

What do you want to know about Sirlo?

Nobody replies to these one by one, but what readers ask decides what these pages answer next.

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/sirlo

The payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. It takes a free API key (1,000 requests a day), which returns what this page shows everyone; the full country table, every register citation and the year-by-year series come with a licensed key, as does bulk access.

About this data

measured from records inferred from the name graph machine-generated

These figures come from the data snapshot of and will change as it is rebuilt.

Statistics are aggregated from the Mondonomo name corpus; related names and etymology are inferred from the name graph; pronunciation and any machine-marked transliterations are model-generated. Read how the numbers are made, including their known failure modes, and where the data comes from.

Reference works we consult — surname dictionaries, official name registers, Wikidata and Wiktionary — are named directly, beside the claims they support. The per-country source counts also include datasets of person records: we publish how many there are and their authority tier, but not their names.

Cite this page Mondonomo, “Sirlo”. Data snapshot 2026-10-13.

See how Sirlo parses inside a full name →