Emperor LOUIS I, “der Fromme/le Pieux”, in the Foundation for Medieval Genealogy
Narrative
https://fmg.ac/Projects/MedLands/CAROLINGIANS.htm#GiselaMEberhardFriuliadied866
https://fmg.ac/Projects/MedLands/CAROLINGIANS.htm#GiselaMEberhardFriuliadied866