I manage my minor son's profile and there is a follower of his profile that I would like to remove. I have blocked this user on my account, but he still remains as a follower on my son's profile.
How do I remove or block followers of a profile I manage?
I don't see that anyone is currently following your son's profile, but following only allows someone to see the public activity in their news feed. Since your son manages his own profile, you blocking this other person will not do anything with regard to them seeing public activity of your son (meaning he's adding profiles or updating the family tree on public profiles). I'm not even sure blocking will hide your public activity - it's public after all. Blocking will prevent specific users from contacting you or performing actions on profiles you manage. Blocking a user also removes them from your family groups. It does not stop them from seeing your edits on public profiles or private profiles if they're within your family group.
