[1] Born at King Louis' court in Regensburg, Bavaria, young Irmgard, like her sisters, was destined for a monastic life.

She was known for her comprehensive education About 850 Louis appointed Irmgard abbess of Frauenwörth, which had been founded by the last Agilolfing duke Tassilo III of Bavaria in 782 and held the status of an Imperial abbey since 788.

Since she was of Imperial descent, the incumbent abbess of Frauenwörth had the right to wear a thin golden hoop, resembling a little crown.

Irmgard was already venerated in the early 11th century, when abbot Gerhard had her head reliquary translated to Seeon Abbey in 1004.

In paintings Irmgard is portrayed in a Benedictine habit either crowned with Bible and abbot's staff or with heart in her hand.