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.

Folk singer Peter Yarrow — writer of the timeless classic "Puff the Magic Dragon" and one-third of the legendary folk trio Peter, Paul and Mary — died Tuesday, a family representative said. He was 86 and had been diagnosed with bladder cancer four years ago.

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.

Peter Yarrow, who was popular for his stint with the folk music trio Peter, Paul & Mary, has passed away at the age of 86. Known for releasing hits like “Puff, the Magic Dragon,” “500 Miles,” and more with the group,

American singer and songwriter Peter Yarrow, who found fame with the 1960s folk music trio Peter, Paul and Mary, died on Tuesday at the age of 86, his publicist said. Yarrow died at his New York home surrounded by family following a four-year battle with bladder cancer,

Peter Yarrow, a singer-songwriter best known as a member of the folk trio Peter, Paul and Mary, has died at the age of 86.