Question: The Roman Catholic Bishop from the French-speaking canton in westen Switzerland during what years?

Context paragraphs:
Daniel Q. Brown: Daniel Quilter Brown was an American Old Roman Catholic bishop.  He was a Roman Catholic layman who left the Catholic Church in the late 1960s because he was dissatisfied with the reforms of the Second Vatican Council.  Brown was consecrated a bishop in 1969 by North American Old Roman Catholic Church bishop Hubert A. Rogers.

Canton of Neuchâtel: The Republic and Canton of Neuchâtel (French: "la République et canton de Neuchâtel" , ] ) is a canton of French-speaking western Switzerland.  In 2007, its population was 169,782, of whom 39,654 (or 23.4%) were foreigners.  The capital is Neuchâtel.

William S. Skylstad: William Stephen Skylstad (born March 2, 1934 in Omak (Methow) in Okanogan County, Washington) is an American Roman Catholic Bishop.  He is Bishop Emeritus of the Roman Catholic Diocese of Spokane in Washington retiring June 30, 2010.  He is a former President of the United States Conference of Catholic Bishops (USCCB), having served after Archbishop Wilton Daniel Gregory of Atlanta, Georgia and before Cardinal Francis Eugene George, O.M.I., of Chicago, Illinois.  Bishop Skylstad was appointed Apostolic Administrator of the Roman Catholic Diocese of Baker, in Oregon, effective January 24, 2011, upon the appointment of Bishop Robert F. Vasa as Coadjutor Bishop of the Roman Catholic Diocese of Santa Rosa in California.

Pierre Mamie: Monsignor Pierre Mamie (4 March 1920 in La Chaux-de-Fonds, La Chaux-de-Fonds District, Neuchâtel, Switzerland – 14 March 2008 Villars-sur-Glâne, Sarine, Fribourg, Switzerland) was the Roman Catholic Bishop of the Diocese of Lausanne, Geneva and Fribourg from 1970 to 1995.

Pedro Agustín: Bishop Pedro Agustin y Albanell (February 22, 1512 – February 26, 1572) was a Spanish Catholic bishop.  He served as both Bishop of the Roman Catholic Diocese of Elne (now Roman Catholic Diocese of Perpignan-Elne) in France and of the Roman Catholic Diocese of Huesca in Spain.

Robert Brom: Robert Henry Brom (born September 18, 1938) is a U.S. bishop.  He was the seventh Roman Catholic Bishop of Roman Catholic Diocese of Duluth in Duluth, Minnesota between 1983 until 1989, and the fourth Bishop of the Roman Catholic Diocese of San Diego in San Diego, California from 1990 to 2013.

Donald Edmond Pelotte: Donald E. Pelotte SSS (April 13, 1945 – January 7, 2010) was the third Roman Catholic bishop of the Diocese of Gallup, New Mexico.  He was the first person of Native American descent to become a Catholic bishop in the United States; Philadelphia Archbishop Charles J. Chaput, O.F.M. Cap. , is the only active American diocesan bishop of Native American descent.  He is also the only known Roman Catholic bishop to have ordained his own twin brother.  Bishop Pelotte ordianed Father Dana F. Pelotte, SSS, to the priesthood, on September 4, 1999 in their childhood parish of Waterville, Maine.

Jean Baptiste Pompallier: Jean-Baptiste François Pompallier (11 December 1802 – 21 December 1871) was the first Roman Catholic bishop in New Zealand and, with priests and brothers of the Marist order, he organised the Roman Catholic Church throughout the country.  He was born in Lyon, France.  He arrived in New Zealand in 1838 as Vicar Apostolic of Western Oceania, but made New Zealand the centre of his operations.  In 1848 he became the first Roman Catholic Bishop of Auckland.  He returned to France in 1868 and died in Puteaux, near Paris, on 21 December 1871, aged 69.  His exhumed remains were returned to New Zealand in 2001 and they were re-interred under the altar at St Mary's, Motuti, in 2002.  Educational institutions named in his honour include Pompallier Catholic College, Whangarei (1969).  There are Pompallier houses at Sacred Heart College, Auckland (1903), St. Bernard's College, Lower Hutt (1947), Carmel College, Auckland (1957), St John's College, Hamilton (1961), St Peter's College, Gore (1969), Liston College, Auckland (1974), St Mary's Rotorua, Garin College, Nelson (2002) and other New Zealand secondary and primary schools.  Sancta Maria College, Auckland (2004) commemorates Pompallier and his work through the name of his schooner, the "Sancta Maria".

Sylvester Donovan Ryan: Sylvester Donovan Ryan (born September 3, 1930 in Avalon, California) is a retired Roman Catholic bishop.  He was the Roman Catholic Bishop of Monterey in California from his installation on March 19, 1992 to January 30, 2007.  From 1990 to 1992 he was an auxiliary bishop of the Archdiocese of Los Angeles.

Columba Macbeth-Green: Columba Macbeth-Green (born 30 June 1968) is an Australian Roman Catholic bishop who currently serves as bishop of the Roman Catholic Diocese of Wilcannia-Forbes.  Until the episcopal ordination of Bishop Richard Umbers on 24 August 2016, Bishop Macbeth-Green was the youngest Catholic bishop in Australia.

Supporting paragraphs: Pierre Mamie Canton of Neuchâtel
Answer: 1970 to 1995