 Theodoric thereby was a grandson of the Wettin progenitor Theodoric I.At Christmas 1009, after his father was killed in a fierce struggle with Margrave Werner of the Northern March, Theodoric was vested with the County of Wettin in the Saxon Hassegau (ruling as Theodoric II) by King Henry II of Germany at Pöhlde.From 1015, he also appeared as a and count in the neighbouring Schwabengau.