Who was first? There has long been much confusion about which married couple first shared the same bed on TV. Some have said Lucy and Ricky of I Love Lucy, others have gone for Carol and Mike of The Brady Bunch, Wilma and Fred of The Flintstones, Lily and Herman of The Munsters, and, of course, Samantha and Darrin of Bewitched. Strangely enough, it was none of these. The winner is Mary Kay and Johnny, which first aired on November 18, 1947. This was a 15-minute series that ran for three years. The Flintstones [1960-1966] were next, but are often discounted because they were cartoon characters, not real people. Next would be Bewitched and The Munsters both of which first aired in 1964.
Bewitched first showed Darrin and Samantha sharing a bed on October 22, 1964. The Munsters first showed Herman and Lily sharing the same bed in the episode "Autumn Croakus," which aired on November 26, 1964. The Brady Bunch didn’t come along until 1969. The Ricardos and the Nelsons, for example, always used twin beds.
It's from a blog, so you have been warned. http://www.harpiesbizarre.com/bedtime.htm
To Mr. Newhart: "Hi, Bob. You're mistaken."
There is a similar controversy about which show first showed a toilet (this was another no-no on early TV).