Peter Yarrow, the singer-songwriter who was one-third of the folk trio Peter, Paul and Mary, has died at age 86, his representative confirmed to ABC News.

The singer-songwriter and social activist best known as one-third of the folk-music group Peter, Paul and Mary, has died at age 86.

Peter Yarrow, the singer-songwriter, activist and founding member of the folk trio Peter, Paul and Mary, has died at 86 after battling bladder cancer.