MMA Fighter Conor McGregor’s Sister, Erin, Marries Songwriter Beau in Luxurious Ceremony

Surrounded by loved ones, Erin McGregor exchanged vows with her longtime partner in a glamorous ceremony that beautifully combined sophistication and warmth.

Erin McGregor, sister of MMA star Conor McGregor, marked a significant chapter in her life by marrying singer-songwriter Terry Kavanagh in a breathtaking ceremony in Ireland on August 17, 2024.

Erin McGregor and Terry Kavanagh smile together during their wedding on August 17, 2024 | Source: Instagram/people

Surrounded by close family and friends, the couple exchanged vows at the historic Cashel Palace Hotel, symbolizing the culmination of their journey together. Erin and Terry chose Ireland as their venue, with Erin expressing, “Home is where the heart is.”

Having been together for several years, Erin and Terry shared a deeply personal journey leading up to this day. Reflecting on their wedding, Erin said, “We wove the most beautiful and significant parts of our lives into this day, each in its own unique way. To us, getting married means completing our family, the final link in our unbreakable chain.”

The setting of their nuptials, the Cashel Palace Hotel, was the perfect backdrop for their luxurious celebration. Set within a regal manor dating back to 1732, the hotel is located in the heart of Ireland and offers views of the iconic Rock of Cashel.

With a rich history of hosting illustrious guests such as Jacqueline Kennedy, Ronald Reagan, and the late Princess Diana, the meticulously restored hotel provided a glamorous and historic setting for the couple’s big day.

Erin McGregor and Terry Kavanagh kiss on their wedding day at Cashel Palace Hotel on August 17, 2024 | Source: Instagram/odicci_films

Erin and Terry ensured that every detail of their wedding reflected their love story and the family they have built together, making the day uniquely theirs. The couple shares an 8-year-old son, Harry, and Erin has a 24-year-old daughter, Taylor, from a previous relationship.

On her wedding day, Erin radiated elegance in a custom Zuhair Murad gown, featuring intricate lace detailing and a corset-inspired bodice. She completed her look with Jimmy Choo shoes, which perfectly complemented the regal and glamorous theme of the wedding.

A closer look at Erin McGregor’s dress on her and Terry Kavanagh’s wedding day, August 17, 2024 | Source: Instagram/odicci_films

“The gown perfectly complemented the regal and glamorous theme of the wedding, making me feel both sophisticated and radiant,” Erin shared. For the beautiful bride, this moment was a dream come true.

Erin McGregor’s elegant white gown and Terry Kavanagh’s stylish suit during their wedding on August 17, 2024 | Source: Instagram/erinmcgregor123

In a 2018 interview with RSVP, Erin expressed her wedding aspirations, “I would love to get married, I would love the big bright dress and the big day out. For me, it has always been a dream of mine to be dressed like a princess. I think that’s what Dancing with the Stars did for me, it made me feel like a princess [sic].”

Terry matched Erin’s elegance, donning a white double-breasted suit paired with black trousers. He completed his look with a black ribbon and a sparkling watch.

Terry Kavanagh adjusts his watch while wearing a double-breasted white suit and black trousers on his and Erin McGregor’s wedding day, August 17, 2024 | Source: Instagram/odicci_films

The couple’s wedding rings were equally stunning—Erin’s band was encrusted with diamonds, while Terry opted for a simple silver ring.

The light blue theme highlighted the essentials of Terry Kavanagh and Erin McGregor’s wedding on August 17, 2024 | Source: Instagram/odicci_films

The couple meticulously planned every aspect of their wedding, incorporating meaningful elements throughout the occasion with the collaboration of Andrea Winckworth from Andrea Winckworth Events.

The couple’s outdoor ceremony was held on the hotel’s sprawling green grounds, featuring a white wedding aisle runner topped with chairs, a floral-decorated arch, and a piano.

The wedding venue of Terry Kavanagh and Erin McGregor at Cashel Palace Hotel on August 17, 2024 | Source: Instagram/odicci_films

One of the most important considerations for Erin and Terry was ensuring the comfort of their son, Harry, who has autism. They chose to hold the ceremony outdoors, allowing Harry the freedom to roam without feeling confined.

Erin McGregor and her son, Harry, on the sprawling grounds of the Cashel Palace Hotel on August 17, 2024 | Source: YouTube/storyofeve6183

“Our absolute must-have for the wedding was ensuring that Harry was as comfortable as possible and able to enjoy the wedding festivities,” Erin said. Their thoughtfulness extended to their guest list, which included 135 friends and family members.

Guests at Terry Kavanagh and Erin McGregor’s wedding at Cashel Palace Hotel on August 17, 2024 | Source: Instagram/odicci_films

Among the guests was Erin’s brother, Conor McGregor, who attended with his partner, Dee Devlin, and their four children: Croia, Rian, Conor Jr., and Mack. Adhering to the black-and-white dress code, Conor and his family looked striking, with Dee stunning in a chic one-shoulder ensemble.

Dee Devlin and Conor McGregor with their kids, Croia and Mack, at Terry Kavanagh and Erin McGregor’s wedding on August 17, 2024 | Source: Instagram/thenotoriousmma

Conor McGregor plays with his son, Mack, at Terry Kavanagh and Erin McGregor’s wedding on August 17, 2024 | Source: Instagram/thenotoriousmma

Conor McGregor smiles at his son, Mack, during Terry Kavanagh and Erin McGregor’s wedding on August 17, 2024 | Source: Instagram/thenotoriousmma

Conor McGregor carries his son, Rian, at Terry Kavanagh and Erin McGregor’s wedding on August 17, 2024 | Source: Instagram/thenotoriousmma

Conor McGregor’s two sons, Rian and Conor Jr., at Terry Kavanagh and Erin McGregor’s wedding on August 17, 2024 | Source: Instagram/thenotoriousmma

Conor McGregor’s two children and his partner were not just guests; they were also part of the wedding entourage on Erin and Terry’s big day. Croia, as a flower girl, and Dee, as a bridesmaid, were seen walking down the aisle, while Conor Jr. was positioned at the front of the wedding aisle.

Terry Kavanagh applauds as Croia McGregor, another unnamed flower girl, and Dee Devlin make their way down the aisle on August 17, 2024 | Source: Instagram/thenotoriousmma

Conor McGregor Jr. stands at the front of the wedding aisle behind Terry Kavanagh on August 17, 2024 | Source: Instagram/odicci_films

Erin and Conor’s parents, Margaret and Tony McGregor, were also present—Margaret wore a silver gown with a sheer cover-up, while Tony looked sharp in a suit and tie. Terry’s older daughter, Taylor, added to the occasion’s elegance in a sleeveless white dress.

After the ceremony, guests were treated to an elegant cocktail reception featuring a variety of tempting canapés. The drinks menu included cocktails made with Proper Twelve Irish Whiskey and Forged Irish Stout, both owned by Conor McGregor. A six-piece acoustic band provided entertainment as guests mingled and enjoyed the festive atmosphere.

Conor McGregor drinks beer at Terry Kavanagh and Erin McGregor’s wedding on August 17, 2024 | Source: Instagram/thenotoriousmma

Conor McGregor and a guest holding their drinks at Terry Kavanagh and Erin McGregor’s wedding on August 17, 2024 | Source: Instagram/thenotoriousmma

Conor McGregor and other guests smile as they enjoy their drinks at Terry Kavanagh and Erin McGregor’s wedding on August 17, 2024 | Source: Instagram/thenotoriousmma

The evening continued with a sumptuous four-course dinner, showcasing the culinary expertise of the Cashel Palace Hotel. The reception tables were adorned with white flowers. Light linens, gold-rimmed glassware, and candles create a warm, sophisticated ambiance, completing the luxurious and meticulously arranged setup.

Terry Kavanagh and Erin McGregor’s wedding reception at Cashel Palace Hotel on August 17, 2024 | Source: Instagram/odicci_films

Gold-rimmed glasses and candles create a romantic ambiance at Terry Kavanagh and Erin McGregor’s wedding reception at Cashel Palace Hotel on August 17, 2024 | Source: Instagram/odicci_films

For dessert, guests indulged in slices of the couple’s five-tier wedding cake, adorned with edible flowers and a large cascading bow. Other dessert offerings included strawberries and vanilla, white chocolate, and matcha tea.

Erin McGregor and Terry Kavanagh slice their five-tier wedding cake at Cashel Palace Hotel on August 17, 2024 | Source: YouTube/storyofeve6183

As the night progressed, a 10-piece band played Terry and Erin’s first dance to “Unconditional” by Sinéad Harnett, marking the start of the evening’s celebrations. Surrounded by loved ones, the couple and their guests danced the night away.

Several guests dance at Terry Kavanagh and Erin McGregor’s wedding reception on August 17, 2024 | Source: Instagram/thenotoriousmma

Conor McGregor and Devlin dance at Terry Kavanagh and Erin McGregor’s wedding reception on August 17, 2024 | Source: Instagram/thenotoriousmma

Conor McGregor, Dee Devlin, Taylor Kavanagh, and other guests dance at Terry Kavanagh and Erin McGregor’s wedding reception on August 17, 2024 | Source: Instagram/thenotoriousmma

Margaret McGregor and Dee Devlin are all smiles as guests dance at Terry Kavanagh and Erin McGregor’s wedding reception on August 17, 2024 | Source: Instagram/thenotoriousmma

Later, Erin swapped her formal wedding gown for a playful white minidress by Folkster, accessorized with bridal-themed sunglasses.

Erin McGregor dons a white minidress at the afterparty of her wedding to Terry Kavanagh on August 17, 2024 | Source: YouTube/storyofeve6183

Music continued to fill the air as Casa Disco—a four-member group featuring a DJ, singer, drummer, and saxophonist—took over the stage, keeping the energy high as the celebration carried on late into the night.

Conor McGregor and other guests dance joyfully at Terry Kavanagh and Erin McGregor’s wedding reception on August 17, 2024 | Source: Instagram/thenotoriousmma

The festivities concluded with a spectacular fireworks display that lit up the sky, marking the couple’s union with a dazzling finale. Afterward, everyone enjoyed themselves, with Conor and Dee sharing fun stories back in their hotel room.

Conor McGregor, Dee Devlin, and their son, Mack, joined by friends in their hotel room at Cashel Palace Hotel on August 17, 2024 | Source: Instagram/thenotoriousmma

Erin and Terry’s love story began in the most unassuming way—at a smoothie bar in Las Vegas. Introduced by a mutual friend with a little encouragement from Erin’s mother, their connection grew quickly.

Erin McGregor beams as Terry Kavanagh waves to the crowd, both expressing their happiness on their wedding day, August 17, 2024 | Source: Instagram/odicci_films

In a 2018 interview with RSVP, Erin reflected on how their relationship began, sharing, “A friend of mine was partying hard and he introduced us. Neither of us were drinking, I was huge into fitness, and my friend tried to do a Cilla Black by setting us up together.”

Erin shared that her mother immediately vetted her new partner with questions when they first met, as if mentally checking boxes. Erin had given up on love, believing it only existed in fairytales, but after they started texting, she declined his dinner invitation and suggested a walk instead.

“I arrived with no make-up on and wearing leisurewear, which was a big deal for me, and as corny as it sounds, I knew he was the one,” Erin recalled. “You know when you know.”

Despite her initial hesitations about finding love again, Erin found her “happily ever after” with Terry, culminating in their beautiful wedding at Cashel Palace Hotel.