Do you think it is age related?

I went to check on one of my stories that is out with a magazine. It is past time for them to have responded. So I am sending them a query, if only I could remember the name of the work.
I know it is one of four stories about a group of colonists in the mid-1600s. I can tell you the name of the characters, and the plot in detail. But I can’t for the life of me remember the title.
Every story I start gets a working title as soon as the first paragraph is done. My computer is full of titles like Dog.doc, Buff Orffington.doc, attic man.doc, or Parker 2010.doc. The one I am looking for is called Locked Room.doc. Dog, and Buff Orffington don’t have real titles yet, but attic man and Locked Room do. You would think that after all the hours it takes to write a short story, getting down the first draft and going through it half a dozen times after it has been read by my critique partners, I would remember the name. The file names stick with me, but the public names are harder to remember. I could look it up if only I could remember which of my nine thumb drives it is on.