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Dictionary of Medieval Names
from European Sources

Aldegarde f. Old High German alt, Old Saxon, Old Frisian ald 'old' + Old Saxon gard, Old High German gart 'enclosure, protection; yard, garden'.

France
Latin
11thC Aldearda (nom) StVdM-II 729; 1060 Aldiarda (nom) ibid. 730
Cite as: S.L. Uckelman. "Aldegarde". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 3. http://dmnes.org/2016/3/name/Aldegarde.