Roussel was born on October 23, 1941. He attended
St. John's School in Houston, Texas, and then the
University of Houston, before graduating in 1965. Both his parents were journalists, his late father, Hubert Roussel, serving as drama, music and film critic for The
Houston Post, 1933 to 1966. During that time he reviewed and interviewed performing arts icons,
Arthur Rubenstein,
Marian Anderson,
Van Cliburn,
Judy Garland,
Clark Gable, members of the Ballet Russe de Monte Carlo, and others. Roussel's late mother, Dewey Roussel, was also a newspaper reporter and an actress. She helped organize the Houston Stage Canteen during World War II. His older brother, Hubert Roussel, Jr., enlisted in the Army Air Corps during World War II and as a member of a B-29 crew was lost on a mission in the Pacific on December 13, 1944, at age 20. Dewey Roussel's story about her eldest son, "Message of the White Dove", appeared in the September 1985 issue of Reader's Digest. Peter Roussel also had an older sister, Stephanie, a ballerina and actress who died in 2014. ==Career with Federal Government and national figures==