This page is historical. Follow this link for the current version.
Dictionary of Medieval Names
from European Sources

Aldo m. Old High German alt, Old Saxon, Old Frisian ald 'old', or a pet form of any of various names beginning with this element.

Italy
Latin
1527 Aldelli (gen) Rome1527 p. 90
Cite as: S.L. Uckelman. "Aldo". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 3. http://dmnes.org/2015/3/name/Aldo.