Albert I, Duke of Brunswick-Grubenhagen

Albert I of Brunswick- Grubenhagen (* around 1339, † 1383 ) was Duke of Brunswick- Lüneburg, Duke of Brunswick- Grubenhagen - Salzderhelden, reigned from 1361 to his death.

Albert I was the eldest son of Duke Ernst of the elders of Grubenhagen. Already during his lifetime co-regent, Albrecht reigned after his death the Principality Grubenhagen except for a few possessions to Osterode and Herzberg, he ceded his brother Friedrich, alone and resided in the castle Salzderhelden in Einbeck, which is why he was also called the " Duke of salts".

It describes him as a lover of history and science; nevertheless flourished under his highway robbery, which he himself should not have been a stranger, which he ran with his neighbors in some dispute. On June 29, 1361 with his brother Johann Albrecht issued the City of Braunschweig the Huldebrief, fell in the same year with Count Otto von Waldeck and his son Henry feud and was caught with his brother in 1362 at the Battle of Arnold Stockhausen. Only after sworn oath of truce, he received the freedom.

The countries of the Landgrave Frederick the rigors of Thuringia were particularly badly affected by the raids of Albrecht and his vassals. After serious but futile reminders of the Landgrave moved in 1365 with a major for that time army, as is alleged with eighteen thousand men, in the pit Hagen country and encamped before Einbeck and Salzderhelden, but had to go a few months without having achieved anything even removed. On occasion, this feud for the first time in the Brunswick Landing a gun mentioned ( " diz waz the first socket, dy yn dessin landin heard wart" ). But devastated the Landgrave towns and villages, took and broke several of the castles of robbery Albrechts vassals and forced him in to sue for peace. Soon Albrecht broke the peace anew, the Landgrave covered his country again and Albrecht had to until arbitrated dispute for putaway in Eisenach comfortable.

Through these feuds get into Geldbedrängnis, Albrecht was forced to pawn some of his possessions, so in 1365 the Bailiwick in and around Hamelin to Count Johann von Spiegelberg, 1372, the town of Hamelin himself to Count Otto von Schaumburg and 1370 the city council Braunschweig its share of the soft form Altewiek and bag, the jurisdiction, the Jewish customs and to the mills of Brunswick. In 1381 he sold the Bishop of Hildesheim several Situated around Einbeck villages for 300 Rhenish florins to buy again.

With his wife Agnes, daughter of Duke Magnus with the chain of Brunswick, Albrecht had a son, Erich. Albrecht probably died in 1383 and is buried in the Alexander pin to Einbeck.