33%RatingSave Gender Masculine Usage Germanic [1] Meaning & HistoryExpand Links Old German form of Detlef. Related NamesFamily Tree·Details Rootsthiod/diota + leva/leibaOther Languages & CulturesDetlef, Detlev(German) Detlef, Detlev(Low German) Categories family, people Sources & References Förstemann, Ernst. Altdeutsches Namenbuch. Bonn, 1900, page 1438.