The House of Leiningen is the name of an old German noble family whose lands lay principally in Alsace, Lorraine, Saarland, Rhineland, and the Palatinate.

Various branches of this family developed over the centuries and ruled counties with Imperial immediacy.

This was outside the county of Leiningen on the territory of Limburg Abbey, of which his uncle was the overlord (Vogt), which caused some trouble.

His eldest son, Simon (c. 1204–1234), married Gertrude, heiress of the County of Dagsburg, bringing that property into the family.

They had no children and Simon's two brothers inherited the county of Leiningen together: Frederick III (d. 1287) also inherited Dagsburg and Emich IV (d. c. 1276) Landeck Castle; he founded the town of Landau, but the Landeck branch extinguished with his grandson in 1290.