A local historian’s research led the Irish government to find an unmarked mass grave with remains of about 800 children.

Mary Travers Memorial Is Scheduled for Nov. 9 A memorial celebration of the life and music of the folk singer Mary Travers will be held at 7 p.m. on Monday at Riverside Church.

Folk trio Peter, Paul and Mary, from left, Mary Travers, Paul Stookey and Peter Yarrow, perform at a Los Angeles benefit to aid to Cambodian refugees on Jan. 30, 1980. Credit: AP/George Brich ...

Peter Yarrow was a singer-songwriter and a social activist, but he was best known as one-third of the folk-music group Peter, Paul and Mary.

FILE – Folk trio Peter, Paul and Mary, from left, Mary Travers, Paul Stookey and Peter Yarrow, perform at a Los Angeles benefit to aid to Cambodian refugees on Jan. 30, 1980. (AP Photo/George ...

Peter, Paul and Mary got back together again in 1978 and continued to perform and make albums until Travers’ death, after which Yarrow and Stookey occasionally played together.

Folk trio Peter, Paul and Mary, from left, Mary Travers, Paul Stookey and Peter Yarrow, perform at a Los Angeles benefit to aid to Cambodian refugees on Jan. 30, 1980.

A memorial service for Yarrow will be announced at a later date, his publicist confirmed. Peter (Yarrow), Paul (Stookey) and Mary (Travers) on "The Jack Benny Program," circa 1963.

Folk trio Peter, Paul and Mary, from left, Mary Travers, Paul Stookey and Peter Yarrow, perform at a Los Angeles benefit to aid to Cambodian refugees on Jan. 30, 1980. (AP Photo/George Brich, File) ...

Singing trio Peter, Paul and Mary (left to right, Paul Yarrow, Mary Travers and Paul Stookey) pose for photographer backstage at Avery Fisher Hall in New York, Oct. 20, 1980.

Folk trio Mary Travers, Paul Stookey and Peter Yarrow, better known as Peter, Paul and Mary, stage a benefit concert at the Nassau Coliseum in Uniondale, N.Y., April 10, 1978.