Thomas, normally the Wikipedia format is not to red-link people who are not yet (or have been deleted - a Wikipedia problem) incorporated into an article. You would simply mention their name (however it is you want to include them) and someone (or yourself) would make the links live as they built articles about them.

What Happened to the Original Article?

I guess the most essential question is what happened to the original article that was on Wikipedia regarding this firm? Where has all of that research and effort gone and who was responsible for its removal? It almost defeats the purpose of even having a Wikipedia doesn't it?