Robert Q. Lewis was rather famous during the 1950s, with The Name's the Same being his best-known series. He frequently appeared as a panelist on CBS' What's My Line? and the 1970s Match Game.
Dennis James is well-known for hosting a myriad of games spanning from 1946 to 1977. Most of his work has been destroyed, except for two shows — Name (five months) and another game (five years, becoming James' longest-running game and his last). Due to a few legalproblems, however, James is typically associated with Name instead.
Gene Rayburn, known best at this point of his career as a radio host, would go on to be the first sidekick on The Tonight Show and helm the 1962–84 versions of Match Game.
Mike Wallace hosted a few games before and after, including Nothing but the Truth, but is more famous for his work in journalism. Yes, him.
Keep Circulating the Tapes: Several episodes aired by GSN also circulate in their unedited forms (i.e., with original commercials), and can be found on some public-domain DVD compilations or among collectors. One of these episodes is the broadcast of April 25, 1955.
Missing Episode: The first eight months, as the earliest episode GSN has aired (and the one which began a 2008 run of the series) was from August 6, 1952 note (interestingly, the same night as the earliest Beat the Clock episode GSN has shown). Several other episodes from 1952 to 1955 are also missing. Here's a comprehensive list.
Real-Life Relative: Two examples back to back on April 18, 1955. First, Ray Goulding's son appeared as the first contestant, his card reading "Ray's Son (Bob had nothing to do with it)"; then that night's guest, Leo Durocher, had a "Secret Wish" that was guessed by his wife on the panel (Lorraine Day).