Peter Marshall, the host of The Hollywood Squares from 1966 through 1982, wrote in his autobiography that Bert Convy was the only man he truly hated. He found him to be an arrogant scumbag or something to that effect. He also had disdain for Dan Rowan of Rowan and Martin because he had apparently stolen comedy material from Peter in the 1950s when Rowan and Martin were first starting out. Peter Marshall had been in a modestly successful comedy team with Tommy Noonan. They even made a couple crap movies together like The Rookie (1960).
The female panel contains a woman Tom Poston was very familiar with, Jayne Meadows, the wife of Tom's one-time employer - Steve Allen.
Just go ahead and smack her, Tom! Below is Tom Poston sitting in his familiar panel seat on To Tell The Truth. He comes in at approximately the four minute mark.
And don't forget about Tom Poston together with David Letterman on this episode of Mork and Mindy.