So when I was looking at the times each game takes place in, I noticed there was only a four year difference. I started thinking about a theory where the Lone Wanderer and the Courier where the same people especially considering they use amnesia as a plot device in FNV.

Thought and opinions on this theory?

They never used Amnesia as a plot device they left it blank for the player to make up, there is no theory to it and Lonesome Road discredits it by giving vague descriptions of the back story of the courier.

Ulysses pretty much tells the courier he's from the west.

Interesting thought nonetheless:)