Daughter of music manager Peter Grant puts Led Zeppelin stake up for sale

Helen Grant hopes to use windfall to further legacy of her father, who she says was band's driving force'

When Helen Grant was a young girl in boarding school, she would hide the fact that her father was Peter Grant, the music manager who turned Led Zeppelin into the world's first stadium rock phenomenon and helped to change the industry.

I was always a little worried about what the other girls would be like with me," she says. I managed to hide it for quite some time until a massive article came out about Dad. All the other parents had seen it and said: You're not going to believe this but that girl you share a dormitory with, her dad's that big Peter Grant person.'"