# John I, Duke of Brunswick-Grubenhagen

> Provost of St. Alexandri in Einbeck (died 1367)

**Wikidata**: [Q1417492](https://www.wikidata.org/wiki/Q1417492)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/John_I,_Duke_of_Brunswick-Grubenhagen)  
**Source**: https://4ort.xyz/entity/john-i-duke-of-brunswick-grubenhagen