A Misrepresentation of Fact

This is the only one I could find.

Yesterday, I waxed eloquently about the items I retained from the kids' childhood.

I said that I had kept Little Cuter's trolls.

I did not.

Although I could swear that I saw them in a box, with the striped jacket Kathy-The-Babysitter made for one of them, when I went to pack them into a box for FlapJilly today they were not there.

Now, did I lie?

No, because in my heart I truly believed what I was saying.  

Was I truthful?

I thought that I was, but apparently I was not..

Is this an alternative fact?

No, because I know, now, that it is not a fact.

It is a figment of my imagination.

Is it a misrepresentation of fact?

Probably, although that was not my intention.

The difference is that I am acknowledging the error and accepting the opprobrium which is rightly due me for writing that which is not true.  I'm not trying to create a phrase to cover my mistake. 

Please, accept my apology.