Who is Rey from Star Wars: The Force Awakens? Some say she's Rey Solo and others say she's Rey Skywalker. Some even go as far to say she's a relation of Emperor Palpatine. I think though the answer may be she's Rey Kenobi (spoilers by the way).
When looking at who is Rey from Star Wars: The Force Awakens there's a lot of parallels linking her to a number of popular Star Wars characters. Some are more likely than others but I think it can be assumed that she's a relation of a known character.
With the current information we have on the character I believe the most likely outcome is she's a descendant of the Jedi Master Obi Wan Kenobi. Her skills in the force seem to lie in areas that Ben Kenobi also specialised in, in particular evading enemies and employing the Jedi Mind Trick.
Not to mention the fact that Ben “Obi Wan” Kenobi actually appears in the film, offering up words of wisdom to Rey during her vision sequence. It would also be pretty sweet for the Grandson of Darth Vader, Kylo Ren is pitted against the Granddaughter of Obi Wan Kenobi, Rey, mirroring the relationship the two shared before the rise of the Galactic Empire.