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Dictionary of Medieval Names
from European Sources

Adaleus m. Old High German adal 'noble' + Old Saxon *lēkian, Old High German *leihhen, *leichen 'to dance, sport, play'.

France
Latin
942 Adalei (gen) St-Bernard-Romans 131
Cite as: S.L. Uckelman. "Adaleus". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 2. http://dmnes.org/2015/2/name/Adaleus.