2nd wife of Clotaire II. Possibly the mother of Dagobert I, according to Wikipedia.
Bertrade married Clotaire II King of Neustria, King of the Franks, son of Chilpéric I King of Soissons and King of Neustria and Fredegund. (Clotaire II King of Neustria, King of the Franks was born in 584 in <Neustria>, France and died in 629 in Paris, (Île-de-France), Neustria, France.)
Weis, Frederick Lewis and Walter Lee Sheppard, Jr; William R. Beall and Kaleen E. Beall, eds, Ancestral Roots of Certain American Colonists Who Came to America before 1700 (8th ed. Baltimore: Genealogical Publishing Company, 2008.), Line 240A-6 (Clotaire II).