Siblings

[Ragged Glory]

Heart came to mind first. Then I saw your choices & also like(d) Van Halen & Pantera. Since we're supposedly talking about the "rockers" on this list, I'll go with Pantera while Van Halen's extremely close behind. Pantera obviously combined to rock the hardest & heaviest compared to anyone else on this list. That's why they got my vote.

 

[Fever]

Van Halen

 

[runningshoes]

Brian, Carl & Dennis Wilson

 

[Scotty The Rebel]

I went with The Allman Brothers.

 

[tomcat]

Ann & Nancy Wilson, then the VH Bros...Could have went either way actually.

 

[METALPRIEST]

Ann & Nancy Wilson

 

[Tray73]

John & Tom Fogerty, with Chris & Rich Robinson coming in second.

 

[joker1961]

Chris & Rich Robinson

 

[recgord27]

Ann & Nancy Wilson ~ Heart