Hennig Brand
German merchant

Hennig Brand (German pronunciation: [ˈhɛnɪç bʁant]; c. 1630 – c. 1692 or c. 1710) was a German alchemist who lived and worked in Hamburg. In 1669, Brand accidentally discovered the chemical element phosphorus while searching for the "philosopher's stone", a substance which was believed to transmute base metals into gold.
Biography
Brand was born in 1630. Some sources describe his origins as working class and indicate that he had been an apprentice glassmaker as a young man. However, correspondence by his second wife Margaretha states that he was of high social standing. He held a post as a junior army officer during the Thirty Years' War and his first wife's dowry was substantial, allowing him to pursue alchemy on leaving the army.
He was one of the many searchers for the philosopher's stone. In the process, he accidentally discovered phosphorus.
He is thought to have died in either c. 1692 or 1710.
Discovery of phosphorus
Like other alchemists of the time, Brand searched for the "philosopher's stone", a substance which supposedly transformed base metals (like lead) into gold.
The public source identifies “Hennig Brand” as german merchant. This brief keeps that definition visible, then builds a research path around Hennig, Brand and German.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Hennig Brand”, the useful work is to connect “german merchant” to the records capable of establishing context and consequence.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 4, 2026. The linked authority identifier is Q77306. VIAF identifies the subject as 6152461. 2 of 2 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1630, 1692, 1710 and 1669.
Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Hennig Brand”, its source revision and the description used here.
- Expand the search: follow Hennig Brand primary sources, Hennig Brand archive and Hennig research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Hennig Brand”?
- What terminology or title could unlock a more precise catalogue search?
- Which institution is responsible for the underlying evidence?
Search terms from this dossier
This entry incorporates text from “Hennig Brand” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.