Some of our cave surveyors have more than two word names, and previously I have had mixed success getting their names reported correctly by Therion. Some worked, some did not. Therion Book says of this data type: person ▷ a person’s first name and surname separated by whitespace characters. Use ‘/’ to separate first name and surname if there are more names. So although this seems a little ambiguous to me, it works for three word names, but not always for four. Many combinations result in an error -- invalid name format -- "Bruce van/der/Mutton" So by trial and error… These are OK: -author 2017 "Bruce Mutton" -author 2017 "Bruce/Mutton" -author 2017 "Bruce van/Mutton" -author 2017 "Bruce van/der Mutton" But these are not: -author 2017 "Bruce/van/Mutton" -author 2017 "Bruce van/der/Mutton" -author 2017 "Bruce/van/der/Mutton" Rather than testing exhaustively, I’m wondering if anyone can shed light on this. Is the condition as simple as ‘only one of the spaces between the names should have a /’? I have only checked what Therion reports in pdf outputs, and not for example html or sql outputs. I have not yet checked 5 or six word names. Bruce