Hi, Raúl. A moderator will need to do that - and moderators normally don't notice requests that are posted on TMDb's Movie/TV/Celebrity regular discussion forums.

To get a moderator to notice your request, click on the "Report" button on Tony Palmer's profile page, then briefly state that you've discovered there are multiple different pages that exist on TMDb for Tony Palmer (please include the links to the other two pages), and that you request the contents of the three pages be merged.

When you submit that report, it'll appear listed on TMDb's Support forum, in the Content Issues section https://www.themoviedb.org/talk/category/504794a319c29527aa000640, that moderators monitor daily.