Around 1147 (according to older historiography around 1142) she married Theodoric, second surviving son of Conrad, Margrave of Meissen and Lusatia.
Dobroniega Ludgarda is named by Chronicon Montis Sereni and Genealogia Wettinensis as a sister of Mieszko III the Old.
[4] There is also a possibility that Dobroniega was the daughter of Bolesław III who was engaged with Konrad von Plötzkau, Margrave of the Nordmark.
However, historian Oswald Balzer rejected this possibility, and Kazimierz Jasiński considered that could not be taken seriously, because in this case we would fall in a bunch of untestable guesses.
As Władysław was the brother-in-law of Conrad III, a king of Germany, his younger brothers were looking for allies in the Holy Roman Empire.
This ally was mentioned first time in sources in the summer of 1146 when Conrad and Albert the Bear, duke of Saxony, conducted negotiations between the Polish princes.
[11] According to Chronicon Montis Sereni some time afterward Theodoric started a relationship with Cunigunde, the widowed Countess of Plötzkau.