# Jean Errard

> Jean Errard or Errard de Bar-le-Duc was a mathematician and military engineer, initially in the service of the ducal court of Lorraine and then of Henry IV of France. He introduced Italian bastions to France and was a forerunner of Vauban as well as uncle to the painter Charles Errard the Elder. He has been called the "father of French fortification".

*French mathematician (1554–1610)*

**Canonical URL:** https://fame.am/person/jean-errard

## Identity
- **Profile type:** Academic ([Wikidata](https://www.wikidata.org/entity/Q39631))
- **Category:** Academics
- **Country:** France
- **Born:** 1554
- **Died:** 1610
- **Status:** deceased
- **Gender:** male

## Bio

Imported from discovery source: wikidata-dump

## Fame
- **Popularity score:** 41.4 / 100
- **Momentum:** 2.9 / 100  (trend: FALLING)
- **Historical depth:** 5.9 / 100
- **Now attention:** 0.0 / 100
- **Source confidence:** 35.0 / 100
- **Profile completeness:** 70.0 / 100

## Sources
- [Jean Errard](https://fr.wikipedia.org/wiki/Jean_Errard)
- [Jean Errard de Bar-le-Duc](https://de.wikipedia.org/wiki/Jean_Errard_de_Bar-le-Duc)
- [Jean Errard](https://en.wikipedia.org/wiki/Jean_Errard)
- [Эрар де Бар-ле-Дюк](https://ru.wikipedia.org/wiki/%D0%AD%D1%80%D0%B0%D1%80_%D0%B4%D0%B5_%D0%91%D0%B0%D1%80-%D0%BB%D0%B5-%D0%94%D1%8E%D0%BA)
- [Jean Errard](https://it.wikipedia.org/wiki/Jean_Errard)
- [Jean Errard](https://pl.wikipedia.org/wiki/Jean_Errard)
- [Wikidata](https://www.wikidata.org/wiki/Q1387082)

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