Ludovici
Wordlist from Comphistsem Frankfurt, Jan. 2016:
GEN sg | m GEN sg Ludovicus
Graesse, Orbis Latinus 1909
Ludovici arx, arcis s. Fortarlitium Ludovici.
Ludovici arx, arcis Fort-Louis, D., Elsaß (Hagenau).
Ludovici castrum Fort-Louis, D., Elsaß (Hagenau).