I'm so confused. If the naming of a lightsaber is based upon who had it longest... All of this is mute. It's ______'s lightsaber. (Wait for it below)
Think about it:
Anakin Skywalker built this lightsaber presumably in his twenties. Has it for a few years before Obi-Wan cuts off his hand and takes it from him.
Obi-Wan Kenobi has this lightsaber in his possession for 19 years. Obi-Wan gives it to Luke Skywalker.
Luke Skywalker has it for 3 years before losing it after Darth Vader cut his hand off and it fell into the workings of Cloud City on Bespin.
Groggin, an ugnaught in Cloud City, has it for a day before Darth Vader kills him for it.
Darth Vader has it for a very short period of time before the Emperor makes him store it in Mount Tantiss on Wayland.
Joruss C'baoth breaks out of prison on Mount Tantiss and ends up with it five years later and gives it to Luuke Skywalker (the clone). Luuke Skywalker is defeated by Mara Jade and Luke Skywalker and Luke gives it to Mara Jade.
Mara Jade has it for 31 years. Jacen Solo kills Mara Jade and takes this lightsaber from her.
And somehow Maz Kanata ends up with it and has it for ? years.
Rey goes into Maz Kanata's basement and touches the lightsaber and flips out and vows to never touch it again and wants nothing to do with it.
Maz Kanata gives the lightsaber to Finn with instructions to find Rey and give it to her. So he has it for what, a couple of days?
Finn fights Kylo Ren with it and gets his spine augmented during the melee and loses it to a pile of snow.
Rey Force calls it to her from out of the snow pile before Kylo Ren can retrieve it and defeats him with it. She's had it for all of what, 10 minutes?
Rey hops in the Millenium Falcon with Chewbacca and R2-D2 to chase down Luke Skywalker and give it back to him like it's a potato made out of lava!
So, until we figure out exactly how long Maz Kanata had it in her basement... going by years of ownership... it Mara Jade's lightsaber.
Welcome to 1984 fellow geeks, I mean 2016, I mean 40+ABY, your history has been rewritten!!!
And SPOILER ALERT :
Rey is a Kenobi! via Ben Ostrower
https://medium.com/@benostrower/rey-is-a-kenobi-362b5af09849#.ruxouiiis
Though I do get the hysteria you are all suffering from over which lightsaber is which, and what way is more accurate than the other way, let me share this story with you:
When I went to see Star Wars Episode VII The Force awakens for the first time I had my GRAFLEX based, not screen accurate grips, lightsaber with me on my fairly accurate Luke in ANH belt. The first reaction I had was from a lady in her 70's who was seated next to me in the theater. What was her reaction when I saw her worried and bug-eyed staring at my lightsaber after I sat down next to her you ask? Well, I unclipped it and presented it to her butt end first so she could get a better look at it and she said "You're not going to shoot me with that are you?". No foolin'! She was very serious. I had to smile even more broadly than I was and explain what the prop was originally and how she was surrounded by a bunch of geeks and that she was in no danger whatsoever from our kind of folk. I clipped it back on my belt and she settled down and the movie started and that was the end of that. Once the movie ended and everyone was standing up, streching their legs and getting their coats on, I looked down and saw a different person all bug-eyed looking at my lightsaber. This time though it was amazement that had his little eyes popping out of his head in the row in front of mine. I gave him a nod, zipped up my coat and strode out of the theater. Out in the lobby, there was a young couple sitting right by the Force Awakens poster and I asked the young woman if she'd take my picture with me standing by the poster. She slid way over thinking I simply wanted her out of the way. I told her that I was asking if she'd take my picture and gestured to her with my camera. Finally she caught on to the idea and kindly took my picture. Her boyfriend was looking at my lightsaber and I handed it to him. "Lightsabers ARE real!" he said. "I can't believe how heavy it is!" He handed it back to me, I told them the history of the prop and thanked her again for taking my photo and left for the parking lot.
So, the moral of the story is this... Unless you're handing your lightsaber over to some other geek who's sitting there with a micrometer in his hand, NO ONE IS GOING TO QUESTION THAT IT ISN'T CORRECT!!!
Through the Force, which surrounds us, penetrates us, and binds us all together, all lightsabers are real.
One Nation, under Jedi, with lightsabers and the Force for All. ~Ridire Fíréan