Well for a start I’d like to say this will either be like…Aah! I has potential or it will be a load of rubbish.
I’ll get straight to the point:
Charlie Hume comes to the island along with Penny and Desmond for a reason that will be explained, Penny and Desmond go through a time window and end up around 1930-1945. The Others kill them but spare Charlie, they give him a name, Charles Widmore. Why Widmore you say? Well maybe they find a Widmore reference on the Island in 19?? or perhaps on Penny. And Charles well…maybe Penny shouts Charles/Charlie before she gets shot or something.
We have seen the stones in the caves in Flashes Before Your Eyes on the table haven’t we? So Penny and Des could possibly be the skeletons, but WHY would they have the stones? This makes Penny’s Son her Father too, which I read a theory on the fun section? I think. And also I have commented this in less detail?
See what you can do guys and correct me if I’m wrong there are a lot of holes in this mad chaotic theory but I hope I can open your eyes to something and begin to unravel the lost mystery! Good Luck!