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Birth:          ABT  980 
Death:          10 Jan 1030 
Burial:         Helmarshausen, Germany

Notes
https://en.wikipedia.org/wiki/Thietmar,_Margrave_of_the_Saxon_Ostmark
Thietmar (IV) (born ca. 990; died 10 January 1030) was the Count of the 
Schwabengau and Nordthüringgau from 1010 and the Margrave of the Saxon Ostmark 
from 1015 until his death. He was the son and successor of Margrave Gero II. His 
mother was Adelaide.

In 1028, the Ostmark, with the rest of the eastern marches of the Duchy of Saxony fell 
under attack from Mieszko II of Poland. The Emperor Conrad II rushed from central 
Saxony and trekked over very wild terrain to besiege the Poles in Bautzen. 
Meanwhile, Bretislaus, son of Oldrich of Bohemia, invaded and conquered the March 
of Moravia, which had been lost to Bohemia since 1003. Conrad, however, failed to 
take Bautzen (1029) and returned to the Rhineland by wintertime, leaving the 
defences of the realm in the hands of Dietrich II of Wettin and Thietmar, who died 
early in January. On his death, Mieszko attacked and destroyed some hundred German 
villages. The setback was severe: the east of the Ostmark was lost.

He was buried in Helmarshausen. Thietmar was succeeded by his son Odo II. He left a 
daughter, Oda, who married William III of Weimar and then Dedo II of Wettin, who 
succeeded her brother Odo.

Parents
____ Gero (ABT  962 - 1 Sep 1015)
____ Adelaide (ABT  965 - )

Siblings
____ Dietmar (Thietmar) II (ABT  980 - 10 Jan 1030)

Marriage To VON BEICHLINGEN Reinhild (ABT  985 - )
    m.  

Notes


Children by VON BEICHLINGEN Reinhild ABT  985 - 
VON DER OSTMARK Oda (ABT 1001 - )

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