Near Knuth and Bishop, Spencer Stout and Dustin Reeser who now have the last name of Reeser-Stout of Salt Lake City also exchanged vows.
When Stout proposed to Reeser in September with a flash mob in the lumber aisle of Salt Lake City's Home Depot, he did not know the proposal video would go viral or that Madonna, Queen Latifah, Mary Lambert and Grammy-winning new artists Macklemore and Ryan Lewis would be in their wedding.
The four Utahns were joined by more than 30 other couples, some gay and some straight, in a group wedding accompanied by Macklemore and Lewis' "Same Love," a song written in support of marriage equality.
The Reeser-Stouts were called by a casting agent while they were in California a few months ago scouting out venues for a small civil wedding. The agent asked if they wanted to get married on live TV.
When they found out the wedding would be on the Grammys, they said, "Well, that sounds a lot more fun than getting married in front of a judge," Spencer Reeser-Stout recalled.
As the day neared, they braced themselves for a highly visible, public wedding.
"We promised each other we would make sure we focused on us, just making it about us," Spencer Reeser-Stout said. "I was looking at Dustin the entire [wedding]. Even though it was public, it was still very special and intimate."
Bishop said he filled with emotion as he and Knuth walked into the Staples Center.
"It was bigger than I could ever imagine and so overwhelming. When we got out there and there were all those people, Taylor starting crying," Bishop said. "Then I started crying."
Of course, the couples couldn't help but notice when Beyonce looked Spencer Reeser-Stout in the eye and said congratulations. Or when Katy Perry hugged Bishop and wished the couples well.
The Reeser-Stouts are planning a ceremony and reception later this week in Salt Lake City to celebrate with family and friends. Betty Who the recording artist whose song "Somebody Loves You" provided the soundtrack to the couple's proposal video and whose rising fame was buttressed by the video's popularity is planning to sing an acoustic rendition of the song at Saturday's ceremony, Spencer Reeser-Stout has said.
The proposal video in Home Depot has racked up 11.3 million views since it was posted in September.
Bishop and Knuth were engaged a year ago; a video on Knuth's YouTube page shows Bishop singing an original song to propose, while friends and family hold up signs with letters that spell, "Will you marry me?"
A better quality sound recording with photos of the engagement is available on a separate video.
Bishop and Knuth are planning a ceremony and reception this summer or fall.