HBO will premiere Beyonce's documentary "Life Is But A Dream" tomorrow night. It will be a rare sneak peak inside Beyonce's private life. Her Uncle Roland reveals the origin of her unique name. He says it was all about preserving a family name.

"My sister Tina [Knowles] didn’t think we had enough boys in the family to keep the [Beyince] name going, so she gave Beyoncé our last name as the first name,” -- Roland Biyince said.

Well, Tina gave Beyoncé a similar name.

Here are some clips from tomorrow night's show.

 

Beyonce:  I'm a human being.

Beyonce:  Private life.