Bernard (between 1358 and 1364 – 11 June 1434, in

Celle Celle () is a town and capital of the district of Celle, in Lower Saxony, Germany. The town is situated on the banks of the river Aller, a tributary of the Weser, and has a population of about 71,000. Celle is the southern gateway to the Lü ...

), Duke of Brunswick-Lüneburg, ruled over several principalities of Brunswick-Lüneburg. In the genealogy of the

House of Welf The House of Welf (also Guelf or Guelph) is a European dynasty that has included many German and British monarchs from the 11th to 20th century and Emperor Ivan VI of Russia in the 18th century. The originally Franconia, Franconian family from ...

, he is considered the first member of the Second House of Lüneburg. Bernard was the second son of Magnus II, Duke of Brunswick-Luneburg. After the death of his father in 1373, he and his brothers agreed with the

Ascanian The House of Ascania (german: Askanier) was a dynasty of German rulers. It is also known as the House of Anhalt, which refers to its longest-held possession, Anhalt. The Ascanians are named after Ascania (or Ascaria) Castle, known as ''Schloss ...

dukes of

Saxony-Wittenberg The Duchy of Saxe-Wittenberg () was a medieval duchy of the Holy Roman Empire centered at Wittenberg, which emerged after the dissolution of the stem duchy of Saxony. The Ascanian dukes prevailed in obtaining the Saxon electoral dignity until th ...

to alternate rule in the

Principality of Lüneburg The Principality of Lüneburg (later also referred to as Celle) was a territorial division of the Duchy of Brunswick-Lüneburg within the Holy Roman Empire, immediately subordinate to the emperor. It existed from 1269 until 1705 and its territory ...

. From 1375 on, Bernard took part in the government de jure, and from 1385 on de facto. After their oldest brother,

Frederick Frederick may refer to: People * Frederick (given name), the name Nobility Anhalt-Harzgerode *Frederick, Prince of Anhalt-Harzgerode (1613–1670) Austria * Frederick I, Duke of Austria (Babenberg), Duke of Austria from 1195 to 1198 * Frederick ...

, had been murdered in 1400, Bernard and his brother

Henry Henry may refer to: People *Henry (given name) *Henry (surname) * Henry Lau, Canadian singer and musician who performs under the mononym Henry Royalty * Portuguese royalty ** King-Cardinal Henry, King of Portugal ** Henry, Count of Portugal, ...

went on a revenge campaign against the

Archbishopric of Mainz The Electorate of Mainz (german: Kurfürstentum Mainz or ', la, Electoratus Moguntinus), previously known in English as Mentz and by its French name Mayence, was one of the most prestigious and influential states of the Holy Roman Empire. In the ...

and the

County of Waldeck The County of Waldeck (later the Principality of Waldeck and Principality of Waldeck and Pyrmont) was a state of the Holy Roman Empire and its successors from the late 12th century until 1929. In 1349 the county gained Imperial immediacy and in 1 ...

, since the archbishop of Mainz was the suspected instigator of the murder plot, and the count of Waldeck performed the deed. Bernard and Henry ruled the Principality of Brunswick together after Frederick's death; in a treaty of 1409, Bernard received sole rule over Brunswick. After a second treaty in 1428, Bernard switched to the Principality of Lüneburg.

Family

Bernard married Margaret, daughter of

Wenceslaus, Elector of Saxony Wenceslas I, Duke of Saxe-Wittenberg ( – 15 May 1388, in Celle) from the House of Ascania ruled from 1370 to 1388 and was a prince-elector of the Holy Roman Empire as well as Prince of Lüneburg. He was the son of Rudolf I and his 3rd wife, Agn ...

, in 1386. They had three children: *

Otto Otto is a masculine German given name and a surname. It originates as an Old High German short form (variants ''Audo'', ''Odo'', ''Udo'') of Germanic names beginning in ''aud-'', an element meaning "wealth, prosperity". The name is recorded fro ...

(died 1446) *

(died 1478) *Catherine (died 1429), married

Casimir V, Duke of Pomerania Duke Casimir V of Pomerania (or, counting differently, Casimir VI; after 1380 – 13 April 1435) was a member of the House of Griffins and a Duke of Pomerania. He ruled in Pomerania-Stettin together with his brother Otto II from 1413 to 142 ...

References

*''Braunschweigisches Biographisches Lexikon,'' Appelhans 2006,
Allgemeine Deutsche Biographie, vol. 2, p. 416-418
{{DEFAULTSORT:Bernard I, Duke of Brunswick-Luneburg 14th-century births 1434 deaths Princes of Lüneburg Princes of Wolfenbüttel Year of birth uncertain Middle House of Lüneburg