In 1265 Margrave Henry III granted the Landgraviate of Thuringia and the Palatinate to Albert and the Margraviate of Landsberg in the Osterland to his younger brother Dietrich.

When she discovered the adultery and the illegitimate births, Margaret left Wartburg on 24 June 1270 and went to Frankfurt am Main where she died on 8 August of the same year.

When Albert intended to leave the Landgraviate of Thuringia to Apitz and compensate his sons from his first marriage with only the Osterland (which included the inheritance from their mother) and the County Palatine of Saxony, they began a war against their father.

Four years later, on 1 October 1290, Albert married thirdly Elisabeth of Orlamünde, heiress of Nordhalben and widow of Hartmann XI of Lobdeburg-Arnshaugk.

The same year, Apitz, Albert's son by Kunigunde, was formally legitimized by the Emperor and created Herr of Tenneberg.

[1] On 11 April 1291 Apitz's younger full-sister, Elisabeth, married Henry III of Frankenstein; the marriage was short-lived and childless.

Two years later, in 1307, Albert finally resigned the Landgraviate of Thuringia and the County Palatine of Saxony to his son Frederick in exchange for an annuity.