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 from the critically acclaimed 1960s folk trio Peter, Paul and Mary passed away on Tuesday, January 7, at age 86 from bladder cancer. To honor him and the lasting legacy he left on the music industry,

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.