Who is the boy trapped in the hole near Miguel's home?

Here’s what the sources suggest:

• One article describes the trapped child simply as “another child” who is filthy and chained down in the hole. It doesn’t name him.
• Another source hints the name might be “Felipe,” but this appears in a more speculative or fan-based context rather than official materials.

If you want, I can try to track down an official source (e.g. from an episode synopsis or credits) to provide a confirmation.