Gerhard IV ( – 1323) was Count of Holstein-Plön from 1312 until his death in 1323.
Life Gerhard was the eldest son of Gerhard II and Ingeborg of Sweden. He inherited Holstein-Plön; on 7 June 1314, he sold most of his inheritance to his brother John III.
Marriage and issue He married on 30 July 1313 to Anastasia of Schwerin ( – after 1316), daughter of Nicholas I of Schwerin, and had two children with her: Gerhard V of Holstein-Plön ( – 22 September 1350), canon at Lübeck Cathedral, potential future Count of Holstein-Plön until his early death.
Ingeborg ( – after 1349), married to Count Conrad I Oldenburg; they were parents of Christian V, Count of Oldenburg
Seals
An early seal from his time as Provost of Lübeck reads:
"Seal of Gerhard, provost of Lübeck by the grace of God"
Ancestors
References Verein für Lübecksche Geschichte und Alterthumskunde: Siegel des Mittelalters aus den Archiven der Stadt Lübeck, Lübeck, 1862-1865