Jack and Meg White have claimed at one time to be siblings and at other times have claimed to be married, however neither is true, they aren't related in any way.
yeah it's a bit weird cos they were married but Jack used to open up their sets by saying "I'm Jack and this is my sister Meg" make of that what you will
Sly and the Family Stone? Isley Brothers? Neville Brothers? Everly Brothers? Staples Singers? Pointer Sisters? The Dixie Cups? Mills Brothers? Andrews Sisters? Del Rubio Triplets (okay, we may have gone too far here)?
If you want to name some: DeBarge, Sister Sledge, DeFranco Family, The Sylvers, The Ronettes, The Cowsills, McGuire Sisters, Lennon Sisters, Gladys Knoght and the Pips, The Kendalls, The Gap Band and if you cross big into country and gospel music there's more than 20 additional.
If Caleb, Nathan, Jared and Matthew had named their band Followill I would have answered every question correctly. I'm satisfied I performed well but profoundly disappointed that I failed to achieve perfection because four brothers from Nashville had royal aspirations and couldn't use their own last name like the Osmonds, the Jackson 5 and the Jonas Sisters.
Phil and Don Everly - The Everly Brothers - it's right in the name.