Ambassador Schieffer has one brother, Bob Schieffer, a journalist, who is the Chief Washington Correspondent for CBS News as well as the host for CBS's Face the nation.
http://www.state.gov/r/pa/ei/biog/7583.htm

Ambassador Schieffer has had a life long fascination with politics. While still attending the University of Texas, he worked in the offices of State Senator Don Kennard and Governor John Connally. In 1972, he was elected to the Texas House of Representatives at age 25 and served three terms.

After studying law at the University of Texas, he was admitted to the State Bar of Texas in October 1979. His practice evolved into one focusing on business transactions, particularly those associated with investments and oil and gas.

In 1989, he was an investor in the partnership led by George W. Bush and Edward W. (Rusty) Rose that bought the Texas Rangers Baseball Club. He was designated as Partner-In-Charge of Ballpark Development in 1990. In January 1991, he was named President of the club reporting directly to general partners Bush and Rose. He was responsible for the day-to-day operations of the club as well as the building of the Ballpark in Arlington. When Bush was elected Governor of Texas in 1994, Ambassador Schieffer assumed Bush's duties as general partner. The partnership sold the team in June 1998 to Dallas financier Thomas O. Hicks. He stayed on as President until April 1999, when he resigned to become consultant on the development of the real estate around The Ballpark.