Boleslav
loc · Latin script
Meaning: Bohemian ruler; pers (Pronouncing Dictionary of Proper Names)
(measured from records)Officially recorded in 7 countries · latest register: dane.gov.pl, 2026
Boleslav is a name written in the Latin script, with more bearers in Poland than in any other country. Boleslav is also written Болеслав in Cyrillic.
- CZCzechia1 in 8K(measured from records)
- SISlovenia1 in 117K
- LTLithuania≈1 in 200K
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). Where a country counts another spelling of the name rather than Boleslav itself, the figure is that spelling’s, and it is named. 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.
- Poland (measured from records)
- 2 (measured from records)
- Record sources
- 91 (measured from records)
- 1 in 8.0K (inferred from the name graph)
16,700 named Bolesław, 2026
recorded for this name
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Czechia
measured from records inferred from the name graph
Boleslav in other scripts: Cyrillic
(measured from records)Locally spelled Болеслав in UA Ukraine, RU Russia, BY Belarus and Boleslaw in US United States.
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
(measured from records)Bohemian ruler; pers. name
Cited for this meaning 1
- Pronouncing Dictionary of Proper Names
Attested across 7 languages in the etymology graph.
Where in the world
(measured from records)Boleslav 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.
| Country | Most common spelling | Sources | ||||
|---|---|---|---|---|---|---|
| PL Poland | — | 16,700as Bolesław | 1 in 2.3K | 18K | — | 9 |
| CZ Czechia | — | 1,342 | 1 in 8K | 1.3K | Boleslav | 33 |
| UA Ukraine | #624 | ≈940 est. | ≈1 in 40K | — | Болеслав | 18 |
| RU Russia | — | ≈560 est. | ≈1 in 258K | register #1,265 | Болеслав | 91 |
| US United States | — | 287as Boleslaw | 1 in 1.2M | 287 | Boleslaw | 17 |
| BY Belarus | #567 | ≈32 est. | ≈1 in 284K | — | Болеслав | 9 |
| SI Slovenia | — | 18 | 1 in 117K | 18 | — | — |
| IS Iceland | — | 5as Boleslaw | 1 in 70K | 5 | — | — |
16,700 people counted by dane.gov.pl — PESEL given names (first + second name position, 2026-01-20), 2026. 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: dane.gov.pl — PESEL given names (first + second name position, 2026-01-20); dane.gov.pl — PESEL living persons (names); MVČR — living population register 2017; Census Bureau — First Name Frequency 2020 by sex; SURS — resident population given names; Þjóðskrá Íslands — Name frequencies (NafnTíðni, registry). 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).
Other recorded senses
(measured from records)Boleslav is also recorded in one other lexicon, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
In Russian, "most glorious."
as a wordA Dictionary of Period Russian Names (Wickenden / Goldschmidt 1996)
Ordered by how much of this spelling's record each language holds, so a sense from a language the name is barely used in sits last rather than first.
Notable people with this name
(measured from records)- Boleslaus I, Duke of Bohemiab. 915CZnot in their usual nameDuke of Bohemia from 935 to 972
- Boleslaus II, Duke of Bohemiab. 927CZnot in their usual nameDuke of Bohemia from 972 to 999
- Boleslaus III, Duke of Bohemiab. 950CZnot in their usual nameDuke of Bohemia
The ten people covered by the most Wikipedia language editions — a proxy for cross-cultural notability, which favours historical and Western figures over equally prominent contemporary ones — shown by birth year. Source: Wikidata (CC0).
Evidence
(measured from records)17 registers and reference works attest this spelling, across 7 countries.
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- Where does the name Boleslav come from?
- Bohemian ruler; pers. name Recorded by Pronouncing Dictionary of Proper Names.
- What does the name Boleslav mean?
- Recorded meaning: Bohemian ruler; pers.
- Which countries have the most people named Boleslav?
- In Poland, the national register counted about 17 thousand people named Bolesław, more than in any other country we hold. After it come Czechia, Ukraine, Russia and United States; the country table on this page ranks them.
- Where is Boleslav most common?
- Measured as a share of residents rather than as a count, Boleslav is densest in Czechia — about 1 in 8.0 thousand people — even though Poland holds more of our records for it.
- How common is the name Boleslav?
- In Czechia, the national register counted 1,342 people named Boleslav, about 1 in 8.0 thousand residents.
- How common is Boleslav compared with other names?
- In Belarus, Boleslav is the 567th most common given name of 7,499 given names recorded there.
What do you want to know about Boleslav?
Nobody replies to these one by one, but what readers ask decides what these pages answer next.
Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/boleslavThe 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, “Boleslav” — ranked 134th in Poland (dane.gov.pl). Data snapshot 2026-10-13.