Sophia of Istria Countess of Andechs by marriage (before 1104–1132) (1050–1132) Parents Richardis of Sponheim Poppo II, Margrave of Carniola Children Poppo of Andechs Mechtildis of Edelstetten Berthold I of Istria Otto VI. von Andechs Gisela von Andechs Siblings Engelbert of Schwarzenburg Hedwig von Krain und Istrien Frederick I Engelbert von Attel und Reichenhall Partners Berthold II, Count of Andechs