 In 1273, the county was divided between Adolph V and his younger brother John II on the one hand, and their uncle Gerhard I on the other hand.Gerhard I received Holstein-Itzehoe; Adolph V and John II then divided their share between themselves, with Adolph V receiving the river Elbe and Great Lake Plön and extensive estates along the Lower Elbe north-west of Hamburg.Adolph V then styled himself "Count of Holstein and Stormarn".