Reference: UsedNames.txt
Purpose
Contains all of the character names that are in use. Also serves as a two-way association between a character name and CreatureDef ID. Global lookups for names or IDs will often use this data.
Data Format
List file. One entry per line. Delimiter: equals sign (=)
Comment character: semicolon (;)
No header.
Each line is key=value pair in the following format:
CreatureDefID=Character Name