Geoffrey II was a notable historical figure who served as the Duke of Brittany from 1186 until his death in 1186. He was the son of Henry II of England and Eleanor of Aquitaine, making him part of the Plantagenet dynasty. Geoffrey was known for his political alliances and efforts to strengthen the position of Brittany during a tumultuous period in medieval Europe. Geoffrey II's reign was marked by his attempts to navigate the complex relationships between the English crown and the French monarchy. He was married to Constance of Brittany, which further solidified his ties to the region. His untimely death led to significant changes in the leadership of Brittany and its relationship with neighboring territories.