Heinrich IV von Gleichen
Heinrich IV, also numbered III, von Gleichen (c.1250–1314) was a son of Count Ernst IV von Gleichen. He built on the family's Nordic ties by marrying Lucia Svantepolksdotter of a leading Swedish magnate house.
Swedish sources record him as a knight and a member of the royal council. In Thuringia he held the Gleichen inheritance and fathered Hermann IV and Heinrich V. He died in 1314.