Originally we thought that we could just use the actors' real names for the character names, but we thought that in a lot of films and literature nominative determinism is used, the theory that a person's name can have a significant role in determining key aspects of job. Therefore we thought that because the band's name, Kankouran, had so much meaning we would also link the names of the characters to the song, Rivers.
A brief internet search for name meanings formed a list of possible names:
Avon
Ailsa
Dana
Dee
Delaney
John
Cleonie
Miriam
Nile
Douglas
All of the names listed have some connection or meaning to a river, it was just a case of choosing which ones fit the characters look, and fit well together.
As we looked at the names, we agreed that we wanted something that was obviously connected to Rivers or water in some way but without looking not like a real name at all. For the female name we liked the idea of Avon because of its obvious connection to Rivers but we thought it didn't sound like a realisitic name so we thought to change it to 'Ava', because it sounds still with the soft, flowing tone but actually sounding like a name. We liked the name Nile for the male part and we thought that it fitted nicely with the character and with Ava.
So, after creating many different combinations of names and different ideas, it was a group decision that Ava, (originally Avon) and Nile would fit best to our characters.