The "Bilderburgs" aren't a family, Bilderburg is an informal nick-name given to a large and very secret annual meeting of some of the planet biggest movers and shakers. Their first meeting, back in the 50's IIRC, was at the Bilderburg Hotel in Holland,hence the name.
And while there's no telling how much power these families still wield, organizations that they were instrumental in starting are still very influential.
The world's central banks come to mind. Does anyone seriously question the power wielded by the central banks?
The Council on Foreign Relations is another. Nearly every serious player in this country, from nearly every president for the last several decades, to the upper echelons of buisness,banking,media,academics,science,etc. are members. I saw a spokesman for them on C-Span years ago, and he dismissed criticisms,saying the CFR was merely a "discussion group", yet they take no notes of their meetings. Why not? What's so sensitive?
The same goes for the Bilderburg meetings.
Stop and THINK for a second: we have a large,well funded, highly secret groups of the most powerful,influential people on the planet, including many in our own government, that largely admit to wanting to bring about world government, that don;t want anyone knowing what they are "innocently" doing and saying.
And NONE of that is speculation, those are just the provable facts. Putting two-and-two together from there shouldn't be that difficult.
edit: I'd like to say more, but I gotta go to work. Again, I would ask that you take an honest look at the evidence before offhandedly dismissing this.