Agnes of Baden, Duchess of Carinthia

Shortly after her birth, her father died (4 October 1250) and her mother lost her inheritance when her aunt Margaret and her husband, Prince Ottokar of Bohemia (later King), were chosen rulers of Austria and Styria.

During her childhood, Agnes lived in Meissen, Saxony, together with her mother, older brother Frederick, and her youngest half-sister Maria Romanovna of Halicz (born from Gertrude's third brief marriage with a Rurikid prince).

King Ottokar II of Bohemia, after taking possession of the Duchies of Austria and Styria, wanted to eliminate all possible contenders to his power, and played an ambiguous role in this event.

[1] On 4 December of that year, the Bohemian ruler also compelled Ulrich III to sign a secret treaty in the city of Poděbrady, under which Ottokar II inherited all his lands and dignities in the - likely - case of his childless death, excluding the next and last surviving legitimate member of his family, his younger brother Philip, former Archbishop of Salzburg and ruling Count of Lebenau.

They had five children: Later, the Count and Countess of Heunburg tried together to take advantage of the chaotic situation in Carinthia and claimed part of Agnes' dower lands retained by Ottokar, mainly the County of Pernegg with the city of Drosendorf and other properties, but finally they were forced to surrender by the Bohemian King.