He is "Sid" in "Tom Sawyer." But Sid was not Henry.

Henry was a very much finer and better boy than ever Sid was.
It was Henry who called my mother's attention to the fact that the thread with which she had sewed my collar together to keep me from going in swimming, had changed color.

My mother would not have discovered it but for that, and she was manifestly piqued when she recognized that that prominent bit of circumstantial evidence had escaped her sharp eye.
That detail probably added a detail to my punishment.

It is human.

We generally visit our shortcomings on somebody else when there is a possible excuse for it--but no matter, I took it out of Henry.