Dictionary of Medieval Names
from European Sources

Ingarde f. Old Icelandic ing(i), of uncertain origin but perhaps identical with the god name Ing or Yngvi, also of uncertain origin + Old Saxon gard, Old High German gart 'enclosure, protection; yard, garden'.

Cf. Ingigerd.

France
Latin
c823 Ingardis (nom) irminon-vol2 6, Palatiolum
Cite as: S.L. Uckelman. "Ingarde". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Ingarde.