We recently had a meetup event where Kyle Weiss talked about Persona definition for consumer apps. He walked through the process of initially defining a persona and then how to refine and re-evaluate once you have had a chance to validate assumptions with data. The slides and personas he presented are attached.
Slide deck – Workshop – Personas_posted
Persona 1 – https://cloudup.com/iojqhBWEMNl
Persona 2 – https://cloudup.com/cUoavyWPbFv
One thing to note, this process was geared towards new concepts and new ideas and should be modified for existing B2B orgs or where a business already exists. Understand who your paying customer is, will always be more important than trying to define who they “should” or “could” be.