Hey John,
Leykamm sounds like a very German name to me indeed. I will check my records to see if I can find anything. In the meantime, you may want to check out the Compgen website (German Society of Computer-Aided Genalogy). They have some superb genealogical databases and - best of all - are free to use.
1. Go to the metasearch on:
http://meta.genealogy.net
2. Enter the last name where it says "Nachname" (also consider spelling variations)
3. Enter a place where it says "Ortsname" or skip this for more results.
The metasearch will search the following databases:
GEDBAS (German database of genealogies uploaded by Compgen's users)
Datenbank historischer Adressbücher (historical address and phone books)
Forschungsdatenbanken der Vereine (databases from German genealogical societies)
Online Ortsfamilienbücher (regional genealogies for individual villages, towns and cities)
Volkszahlregister Schleswig Holstein (Schleswig Holstein Census Database)
Grabsteine (German graves / cemeteries)
Deutsche Verlustlisten 1. Weltkrieg (database of German casualties - injured and dead - of World War I)
Grabsteine Ostfriesland (regional graves of Ostfriesland in Northern Germany)
Sterbebilder (obituaries and death cards)
Bremer Passagierlisten (passenger records of Bremen - one of Germany's no. 1 ports of departure for the US)
Auswanderer aus dem Ghzgt. Oldenburg (database of emigrants from Oldenburg)
Daten-Erfassungs-System DES (cross-searches hundreds of databases, historical school records, vehicle registrations etc.)
WGfF Totenzettel (additional obituaries and death cards)
Zufallsfunde (database of random information provided by other genealogists which might be useful for others)