Gf. Berthold III VON ANDECHS, Marchese (II) of Istria, Duke of Merano
- Married: Before 1180
- Died: 12 Aug 1204
- Buried: Diessen am Ammersee, Bayern
The De Fundatoribus Monasterii Diessenses names "Pertoldus dux Meranie marchio Ystrie…filius Pertoldi marchionis" when recording his death in 1204.
He succeeded his father in 1188 as Graf von Andechs. Marchese of Istria, Duke of Merano.
The Notæ Diessenses record the death "1204 III Id Aug" of "Berhtoldus dux Meranie et marchio Ystrie" specifying that he was buried "in capitolio". The necrology of the abbey of Saint-Denis records the death "Id Aug" of "Bertoldus dux Meranie". 1
Berthold married Agnes VON WETTIN, daughter of Dedo V "der Feiste" VON WETTIN, Markgraf der Niederlausitz, Graf von Eilenburg, and Mathilde VON HEINSBERG, heiress of Sommerschenburg, before 1180. (Agnes VON WETTIN, Duchess of Merano, died 25 Mar 1195 and was buried in Diessen am Ammersee, Bayern.)