Who was involved with Tinker v Des Moines?

The Players: John Tinker
                   Mary Beth Tinker
                   Christopher Echardt

Background Infromation:  In December of 1965, John and Mary Beth Tinker and their friend Christopher Echardt, who were 15, 13, and 16 respectively, were attending the public schools of Roosevelt High School, North High School, and Warren Harding Junior High School in the Des Moines, Iowa Independent Community School District.  In an effort to protest the Vietnam War and to support the truce that had just been proposed by Senator Robert Kennedy, the students devised a plan to wear black armbands decorated with a peace sign.  Upon hearing about the students' intentions, the principals in the school district developed a policy on December 14th, 1965 that explicitly forbade any armbandsd in school.  If any student was caught wearing an armband, they would be asked to remove it or suffer suspension.  The suspension would only be lifted upon their agreement to comoe to school without the armband.

Despite the new policy, the students attended school on December 16th, 1965 with their armbands, which they were told to remove.  They refused and were promptly suspended until January 1st, 1966. When they returned, they did not wear their armbands, but that same day the Tinkers' father filed a civil lawsuit against Des Moines, Iowa Independent Community School District in the U.S. District Court for a violation of his children's First Amendment right to free speech.