IMSLP Forums

If I remember correctly in often cases Chopin sent Wieck unpublished manuscripts, but she published them later.
This was most likely the case for this music, and similar things happened with a lot of Chopin's posthumous works as well, which were often published by Wieck.

The first line says "To Madame Clara Wieck."
The handwriting is messy, but I think the second line says "by your admirer," however I could be wrong.

So here is the full message:
[quote]
To Madame Clara Wieck
by your Admirer
Chopin[quote]

It is really up to the player to choose the tempo of Bach, there is no one correct tempo.
Personally I prefer to play it at around 110 BPM, but even as slow as half that speed to as fast as double and beyond when played correctly and with emotion is still perfectly reasonable for a performance.