Thietmar (III) (c. 925 – 3 August 979) was the Margrave of Meissen from 970 until his death. Thietmar was the eldest of three brothers, all sons of Hidda, sister of Gero the Great, and Count Christian of Thuringia. His brothers were Gero, Archbishop of Cologne, and Odo I, Margrave of the Saxon Ostmark.
In 951, he was first recorded as Count of Gau Serimunt, following his father Christian. Between 951 and 978, he was also Count of Schwabengau. After the death of his uncle Gero in 965, Thietmar inherited large parts of whose Marca Geronis.
He married Schwanehilde (Suanhild), daughter of Margrave Hermann Billung, and had one son: Gero II, who in 993 would become Margrave of the Saxon Eastern March. On 29 August 970, Thietmar and his brother Gero founded the abbey of Thankmarsfelde[1], which between 971 and 975 became a royal monastery. It was moved to Nienburg on the Saale river at the mouth of the Bode in 975 and that is where Thietmar is buried. In the years which followed, Thietmar and Gero made further donations of land to the monastery.[2]
Thietmar was succeeded by Rikdag. His widow Suanhilde married Rikdag's successor Eckard I.
| Preceded by Wigbert |
Margrave of Meissen 970–979 |
Succeeded by Rikdag |