Question: Sheila Nix most recently served as Chief of Staff to an American educator who was born in what year?

Context paragraphs:
Robert N. C. Nix Jr.: Robert Nelson Cornelius Nix Jr. (July 13, 1928 – August 23, 2003) served as the Chief Justice of the Pennsylvania Supreme Court from 1984 to 1996.  Nix was the first African-American Chief Justice of any state’s highest court, and the first African American to be elected to statewide office in Pennsylvania.  He served as a justice of the Supreme Court of Pennsylvania for 24 years, 12 of which were as chief justice, and was a prominent figure in Pennsylvania law and public service for more than three decades.

Jerry Palmieri: Gerard Anthony Palmieri (born October 30, 1958) is an American football strength & conditioning coach.  Palmieri most recently served on Tom Coughlin’s staff for the New York Giants, a position he served in for 12 seasons.  During those years, the Giants won Super Bowl XLII and Super Bowl XLVI.  Palmieri was also on Tom Coughlin’s staff with the Jacksonville Jaguars from 1995 to 2002 when their teams competed in two AFC Championship Games.  Palmieri spent 2003 as an assistant strength & conditioning coach for the New Orleans Saints.  Prior to his NFL career he held head strength coach positions at Boston College from 1993 to 1994, where he served under Tom Coughlin and Dan Henning respectively, and at Kansas State from 1987 to 1992 where he was a part of the Bill Snyder transformation of Kansas State Football.  Palmieri began his strength & conditioning career as a part-time strength coach while he earned his master's degree at the University of North Carolina at Chapel Hill from 1982 to 1983, and then an assistant strength & conditioning coach at Oklahoma State University from 1984 to 1986.

Michael Christianson: Michael Christianson (born April 7, 1965) is an American football college and professional coach.  Christianson most recently served as the assistant running backs coach and the Director of Technology for the San Francisco 49ers of the National Football League (NFL) in 2011 thru 2013 which featured a Superbowl appearance against the Baltimore Ravens in Superbowl XLVII (47).  Prior to his tenure with the 49ers, Christianson also served on University of Michigan Head Coach Jim Harbaugh's staff at the University of San Diego (USD) where the Toreros of the Pioneer Football League won a Division I-AA Mid-Major National title in 2006.  He has worked as a football coach at several other National Collegiate Athletic Association (NCAA) institutions, including The University of Nebraska, Montana State University and Portland State University.  Christianson coached the offensive line in 2002-2003 as a member of Jon Gruden's staff and the Tampa Bay Buccaneers, winning Superbowl XXXVII (37).  Christianson played tight-end and offensive lineman at Western Oregon University.

Ross Reid: Ian Angus "Ross" Reid, PC (born July 31, 1952) is a former Canadian politician who mostly recently served as the Chief of Staff to Newfoundland and Labrador Premier's Kathy Dunderdale and Tom Marshall.  Reid is a former Progressive Conservative member of Parliament who served as the Minister of Fisheries and Oceans and Minister for the Atlantic Canada Opportunities Agency under Prime Minister Kim Campbell.

Judith Fedder: Judith Ann Fedder (born 1958) is a retired United States Air Force lieutenant general who most recently served as the Deputy Chief of Staff for Logistics, Installations and Mission Support, Headquarters U.S. Air Force, The Pentagon, Washington, D.C.  General Fedder was responsible to the Chief of Staff for leadership, management and integration of Air Force logistics readiness, aircraft and missile maintenance, civil engineering and security forces, as well as setting policy and preparing budget estimates that reflect enhancements to productivity, combat readiness and quality of life for Air Force people.

Jill Biden: Jill Tracy Biden (née Jacobs , previously Stevenson; born June 3, 1951) is an American educator who is married to the 47th Vice President of the United States, Joe Biden.  She was the Second Lady of the United States from 2009 to 2017.

Sheila Kuehl: Sheila James Kuehl (born February 9, 1941) is an American politician and former child actor, currently the member of the Los Angeles County Board of Supervisors for the 3rd District.  In 1994, she became the first openly gay California legislator and in 1997, she was the first woman to be named Speaker pro Tempore in California.  Kuehl most recently served as a Democratic member of the California State Senate, representing the 23rd district in Los Angeles County and parts of southern Ventura County.  A former member of the California State Assembly, she was elected to the Senate in 2000 and served until December 2008.  She was elected to her supervisorial post in 2014.  In her capacity as Supervisor, she also sits on the Metro Board, First 5 LA, and is the County appointee to the South Coast Air Quality Management District.

Sheila Nix: Sheila Nix is an American political strategist, most recently serving as Chief of Staff to Jill Biden, the wife of Vice President Joe Biden since April, 2013.

Joe Coto: Joe Coto (born Miami, Arizona, United States) is an American educator, city councilmember, and a Democratic politician.  He most recently served three terms as a member of the California State Assembly, leaving office late in 2010.  He served as Chair of the Assembly's Insurance committee, and held positions on the Elections and Redistricting committee, Governmental Organization committee, and the Revenue and Taxation committee.  He also served on the Special committee on Urban Education.

Bruce Chambers (American football): Bruce Chambers is an assistant athletic director at Arlington ISD and an American football coach.  He most recently served as an assistant to Charlie Strong at the University of Texas at Austin, and was the only member of the coaching staff retained from Mack Brown's staff.  Previously he served as coach at David W. Carter High School in Dallas, Texas.  After being dismissed from the staff on December 31, 2014, Chambers was hired by Arlington ISD as assistant athletic director.

Supporting paragraphs: Sheila Nix Jill Biden
Answer: 1951