Couple of places to start: German helmets forum to get a bit more info on it (ie it doesn't look like a Picklehaus (spiked) helmet. Different units had different helmets so it
Might help you narrow the search down
http://www.ghw2.comGoogle translate comes back with "Life Rapp". So not much use
Researching WW1 names might be harder it looks like a lot of records were lost. This came from a genealogy site. Visit the site to get the links mentioned in the text below:
http://genealogy.stackexchange.com/questions/3915/how-to-find-information-on-german-soldiers-from-world-war-i-and-world-war-iiBavarian records appear to be on ancestry.de:
http://search.ancestry.com.au/search/db.aspx?dbid=1631&geo_a=t&geo_s=de&geo_t=au&geo_v=2.0.0&o_iid=41024&o_lid=41024&o_sch=Web+Property"Looking at World War I it is important to know where in Germany your ancestors lived. Within the forces of the German Empire, dominated by Prussia, the contingents of Bavaria, Württemberg and Saxony remained semi-autonomous and also kept their own records.
A lot of of records on participants of World War I were destroyed when the Prussian military archive in Potsdam burned down in 1945. Except for some Reichsmarine (navy) records, almost all individual documents from the Prussian army are lost. Records on navy members from the years between 1871 and 1947 might available from the Deutsche Dienststelle (as detailed)
Records on combatants from Bavaria, Württemberg, Baden and Saxony are kept in local archives:
Bayerisches Hauptstaatsarchiv
Landesarchiv Baden Württemberg - Hauptstaatsarchiv Stuttgart
Hauptstaatsarchiv Dresden
The records from Württemberg and Baden are freely accessible online from the archive. Please see this introduction (in German): Soldaten im Ersten Weltkrieg Findmittel zu den Personalunterlagen des XIV. Armeekorps im Generallandesarchiv Karlsruhe jetzt online. You choose the relevant time period for the personnel rosters and search them by unit (not indexed).
The Bavarian records (Kriegsranglisten und -stammrollen des Königreichs Bayern) are also available on Ancestry.com. They usually contain short biographical information like occupation and place of residence, military career (rank, participation in battles, awards) and information on the soldier’s parents."