John Seymour has been the name of more than one person of note: Wikipedia*
On the C-SPAN Networks:
John Seymour has 83 videos in the C-SPAN Video Library; the first appearance was a 1984 Call-In. The year with the most videos was 1992 with 42 videos. Most appearances with Dianne Feinstein (4), Stanley "Bruce" Herschensohn (4), Bob Michel (2). Most common tag: California.