Herr 
(hĕr)
(hĕr)n. pl. Her·ren (hĕrən) Abbr. Hr.
Used as a courtesy title in a German-speaking area, prefixed to the surname or professional title of a man.
[German, from Middle High German hērre, from Old High German hērro, lord, master, alteration of hēriro, older, more venerable, comparative of hēr, proud, holy, splendid, noble.]