The Treaty of Pavia (1329) between Emperor Louis IV and Adolf's brothers Electors Palatine Rudolf II and Rupert I was concluded, stipulating that Adolf's four-year-old son Rupert II would succeed his childless uncles as Count Palatine and Elector.

He had bequeathed the gift of a magnificent Cross to the Liebenau monastery, which, according to its inscription, had been commissioned by her father, Count Louis VI.

[6] The cross came to Freiburg im Breisgau in a roundabout way and is now among the special treasures of the local Augustiner Museum[7] Irmengard's daughter-in-law Beatrix of Sicily would sometimes visit her in the monastery.

The Dominican chronicler John Meyer[8] (1422–1482) reports that Countess Palatine Beatrix gave birth to her son Rupert in the monastery[9] and that he was brought up until age 7 by his grandmother Irmengard of Oettingen.

The historian Johann Friedrich Schannat provides her grave inscription in his Historia episcopatus Wormatiensis on page 172.