Itta of Metz
Saint Itta (also Ida, or Iduberga), was the wife of Pepin of Landen, mayor of the palace of Austrasia. Her brother was Saint Modoald, bishop of Trier. Her sister was abbess Saint Severa.
On the advice of the missionary bishop Saint Amand, bishop of Maastricht, after Pippin's death, she founded the Benedictine nunnery at Nivelles, with a monastery under the abbess. She herself entered it and installed as abbess her daughter Gertrude, perhaps after resigning the post herself.
She had by Pepin another daughter, Abbess Begga who married Ansegisel, son of Arnulf of Metz. By Begga, she is the grandmother of Pepin of Herstal and one of the matriarchs of the great Carolingian family. Her only son was Grimoald, later mayor of the palace, and father of King Childebert the Adopted.
Both her daughters were later canonised, as was she. Her feast day is May 8.
Sources
Alban Butler's Lives of the saints, edited, revised and supplemented by Thurston and Attwater. Christian Classics, Westminster, Maryland.