Duke Eric I of Brunswick, also known as Eric I of Braunschweig, was a notable nobleman in the 14th century. He was born around 1330 and became Duke of Brunswick-Lüneburg in 1367. His reign was marked by efforts to strengthen his duchy and maintain its independence amid the political complexities of the Holy Roman Empire. Eric I was part of the Welf dynasty, which played a significant role in the history of northern Germany. He is remembered for his contributions to the region's governance and for navigating the challenges posed by rival factions, including the Habsburgs. His legacy continues to influence the historical narrative of the area.