Hi, Kat - the original Weavers were Pete Seeger, Lee Hays, Ronnie Gilbert, and Fred Hellerman. They formed the group in 1949 and broke up in 1952, but got together again in 1955. Seeger left in 1956 or 1957, and was replaced by Erik Darling in 1957. Darling left in 1961, and later founded the Rooftop Singers ("Walk Right In"). Frank Hamilton joined the Weavers in 1962, and was with them for about a year. After that, Bernie Krause was with the group for a short time, and they did their last concert in 1964. the original Weavers got together for two last concerts at Carnegie Hall in November, 1980.
Source; Wasn't That a Time, the Vanguard Weavers anthology.
-Joe Offer-