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Dictionary of Medieval Names
from European Sources

Ingalrada f. An elongation of Old Icelandic ing(i), of uncertain origin but perhaps identical with the god name Ing or Yngvi, also of uncertain origin + Old Saxon rād, Old High German rāt 'counsel, advice'.

France
Latin
c823 Ingalrada (nom) irminon-vol2 20, Palatiolum
Cite as: S.L. Uckelman. "Ingalrada". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2017, no. 1. http://dmnes.org/2017/1/name/Ingalrada.