50%RatingSave Gender Masculine Usage Germanic [1] Meaning & History Derived from the Old German elements alt "old" and hart "hard, firm, brave, hardy". Related NamesFamily Tree·Details Rootsalt + hartOther Languages & CulturesAldert(Dutch) Aldert(Frisian) Categories brave, courage, elderly, strength Sources & References Förstemann, Ernst. Altdeutsches Namenbuch. Bonn, 1900, page 61.