Hangbe was the Ruler of the Kingdom of Dahomey, in presentday Benin, for a brief period before Agaja came to power in 1718. Little is known about her because her rule was largely erased from the official Dahomey history and much that is known is brought together by various different oral histories. However, it is often considered that she became the ruler of Dahomey upon the sudden death of King Akaba because his oldest son, Agbo Sassa, was not yet of age. The duration and extent of this rule is not generally agreed upon. She supported Agbo Sassa in a succession struggle between him and Agaja in 1718. Agaja became King of Dahomey and, because of her support for his opponent, her legacy was largely erased from official history.
Hangbe was born to Houegbadja as the twin sister of Akaba. The twins had a younger brother named Dosu, who later took the name Agaja, which is the traditional name given to the first son born after twins. Akaba became the King of Dahomey around 1685 and Hangbe became an important part of the royal family as the oldest sister of Akaba.
Source: Wikipedia