(CNN)Here is a look at the life of George Mitchell, former U.S. senator (D-Maine).
Birth date: August 20, 1933
Birth place: Waterville, Maine
Birth name: George John Mitchell
Father: George Mitchell, a janitor
Mother: Mary (Saad) Mitchell
Marriages: Heather MacLachlan (December, 1994-present); Sally L. Heath (1959-1987, divorced)
Children: with Heather MacLachlan: Andrew (1997); Claire (2001); with Sally L. Heath: Andrea (c. 1965)
Education: Bowdoin College, B.A., 1954; Georgetown University, L.L.B, 1960
Military Service: United States Army Counter Intelligence Corps,1954-1956
Has been a board member of several major companies, including Walt Disney Company, Xerox and FedEx.
His mother emigrated to the U.S. from Lebanon when she was 18.
1960-1962 - Trial lawyer in the U.S. Department of Justice, Antitrust Division, in Washington, D.C.
1962-1965 - Executive assistant to Senator Edmund S. Muskie of Maine.
1965-1977 - Private practice lawyer in Portland, Maine.
1974 - Runs unsuccessfully for governor of Maine.
1977-1979 - U.S. Attorney for the District of Maine - appointed by President Jimmy Carter.
1979-1980 - U.S. District Court Judge for the District of Maine.
1980 - Is appointed to complete the unexpired term of Senator Edmund Muskie who had resigned to become secretary of state. Mitchell is sworn in on May 19, 1980.
1982 - Runs for and wins a U.S. Senate seat in Maine.
1988 - Is re-elected with 81% of the vote. He does not run in 1994.
1989-1994 - Senate Majority Leader.
1995-2003 - Special counsel at Verner, Liipfert, Bernhard, McPherson and Hand.
1996-2000 - Independent Chairman of the Northern Ireland Peace Talks.
1998 - Receives an honorary knighthood from Queen Elizabeth II for his leadership role in negotiations between Northern Ireland and Ireland that resulted in the Good Friday Peace Agreement.
March 17, 1999 - Is awarded the Presidential Medal of Freedom.
April 1999 - Is awarded the UNESCO Peace Prize.
2000 and 2001 - Chairman of an International Fact-Finding Committee on Violence in the Middle East.
March 3, 2004-December 31, 2006 - Chairman of the Walt Disney Co. board of directors.
2005-2009 - Chairman of the global board of international law firm DLA Piper. Remains a partner.
March 30, 2006 - Is appointed by baseball commissioner Bud Selig to investigate alleged steroid use by major league baseball players.
December 13, 2007 - The Mitchell Report on steroids is released.
January 22, 2009-May 20, 2011 - Special envoy to the Middle East, named by President Barack Obama. Mitchell resigns as the Obama administration's Mideast envoy takes effect.
May 20, 2011 -
August 1, 2012 - The NCAA selects Mitchell as the independent athletics integrity monitor at Penn State, effective immediately for a five-year appointment.
May 31, 2013 - In its most recent Mitchell Report, George Mitchell recognizes Penn State for the improvements it has exhibited towards the "athletics integrity agreement."
June 2014 - Mitchell joins Teneo, a global consulting firm, as a senior adviser.
May 2015 - His memoir, "Negotiator: Reflections on an American Life," is released.