*Berthold II Count of Diessen
born about 1015 Diessen, Oberbayern, Bavaria
died after 1060

father:
*Friedrich I Count of the Ober Isar
born about 0972 Ober Isar, Bavaria, Medieval States
died after 1030

mother:
*Hemma Countess of Öhningen
born about 0990 Öhningen, Konstanz, Baden
married about 1014 Öhningen, Konstanz, Baden

siblings:
*Friedrich II Count of Diessen born about 1019 Diessen, Oberbayern, Bavaria
died about 23 January 1075
Otto I Count of Diessen born about 1017 Diessen, Oberbayern, Bavaria died after 1060
Christine Countess of Diessen born about 1021 Diessen, Oberbayern, Bavaria
Pilihild Countess of Diessen born about 1023 Diessen, Oberbayern, Bavaria died 23 October 1075

spouse:
*unnamed von Hohenwart
born about 1030
(end of information).

children:
*Otto II von Wolfratshausen Count of Diessen, Thanning & Ambras died 1120
*Berthold III von Andechs born 1039 Andechs, Oberbayern, Bavaria died 1098

biographical and/or anecdotal:

notes or source:
LDS
ancestry.com