Conor McGregor grew up with his two siblings, Erin and Aoife, in Ireland

Conor McGregor may be one of the most recognized names in MMA, but behind his success stands a supportive family, particularly his sisters Erin and Aoife.

Growing up in Ireland, the McGregor siblings had modest and loving beginnings, raised by parents, Tony and Margaret McGregor. Erin and Aoife have each forged their own paths while remaining close to their brother. The McGregor siblings’ bond is evident through their frequent social media posts, where they often express their admiration for one another.

Erin, who got married in August 2024, celebrated in the company of her siblings at the Cashel Palace Hotel in their home country. The MMA star reposted a picture of him and his friends dressed in a pastel green suit at the three-day event.

“It was important to us to celebrate with those who have been a constant support in our lives,” she told PEOPLE about her wedding with singer-songwriter Terry Kavanagh. “We wanted an event that reflected our journey, filled with love, laughter and cherished memories, ensuring everyone felt included in our special day.”

Conor’s sisters have also stood by him through every triumph and setback, showcasing a family that remains united regardless of the challenges they face.

Here’s everything to know about Conor McGregor’s sisters — Erin and Aoife — and their relationship with their athletic sibling.

Conor and his sisters were raised by hardworking parents

Conor McGregor with his sister Aoifie and their mom Margaret.

Aoife McGregor/Instagram

Growing up in Crumlin, Dublin, the McGregor siblings’ childhood was marked by the values instilled by their dad and mom, who were dedicated to providing a stable and loving environment. Tony, a taxi driver for 26 years, and Margaret, a devoted homemaker, showcased the importance of hard work and family unity.

“My parents were extremely hard workers,” Aoife told Irish Independent. “All my life they worked. My dad was a taxi driver. They met when they were, like, 13 or 14, when they were working in a launderette just off Baggot Street. They met when they were folding sheets. Folding sheets was apparently the thing to do.”

In an interview with Stellar in 2018, Erin opened up about how Tony and Margaret have impacted her work ethic.

“My parents believe that hard work and determination equals success,” she said. “We’re a working class family, never afraid of hard work and that was instilled in us from youth.”

In an Instagram post with Margaret in November 2023, Conor wrote, “My mother raised me to stand by what is right, and to call out what is wrong.”

Erin has her own clothing line

Conor McGregor’s sister Erin poses for a photo.

Erin McGregor/Instagram

Erin, a former hairdresser, launched her clothing line, Imperfection by Erin McGregor, in 2021.

The brand focuses on “glamorous” yet “comfortable” nightwear for women of all ages, according to the company site. Erin’s real-life experiences have inspired much of the brand, and the pieces “have a deeper meaning to help women create the life they want and deserve.”

In addition to nightwear, Erin released a collection of beds as part of her brand in collaboration with Ireland-based brand DFi Beds in 2022. She posted on Instagram in April 2023, reflecting on the journey and resilience of being a business owner.

“I know many people think doors must fly open for me but that’s not the truth at all,” she wrote. “I’ve been told so many times NO. I couldn’t have dreamt this collaboration in my wildest dreams but here it is.”

Erin’s business ventures are strongly supported by her siblings, with Aoife posting in 2022 about her sister’s new accessories for her brand. “Check out @erinmcgregor123 new jewelry range. Linked in my stories @imperfectionthebrand,” she shared.

Aoife has a passion for beauty

Conor McGregor with his sister Aoife.

Aoife McGregor/Instagram

Aoife’s love for beauty and makeup was evident from a young age, influenced by the McGregor siblings’ mother.

“My mam is so glam,” she told Irish Independent in 2017. “She is really into make-up. I always remember, as a little girl—before gel nails and acrylic nails—every Friday night, before my mother went out for a few drinks with my dad, she would sit and put her nails on.”

Aoife noted that it wasn’t just her mom, Margaret, who instilled a love of beauty and fashion — her dad, Tony, was also “extremely dapper.”

“He loves his old three-piece suits,” she said. “At every family party, all my uncles would rock in with their jeans and their shirts, and I guarantee that Tony would have a three-piece suit.”

Their parents’ influence shaped the siblings’ personal styles as they got older, Aoife added. “It was always in us from a young age to be stylish. We are all quite into fashion,” she continued.

In a heartfelt Facebook post in July 2022, Conor wished his sister a happy birthday, calling her “style queen.”

“Happy birthday my sister @aoife.mcgregor, style queen mad thing I love you so much to the moon and back, forever and always the world is yours my blood,” he penned.

Erin has two kids

Conor McGregor and his family.

Jeff Spicer/WireImage

Erin has an adult daughter, Taylor, from a previous relationship and a younger son, Harry, with her now-husband, Kavanagh. Both children have appeared on the fashionista’s social media accounts.

In May 2023, she posted a video about a mother-daughter trip with Taylor, adding the caption, “London Town with my baby girl.”

Taylor was also featured alongside her mom in an ad posted on Instagram for one of Conor’s brands, Forged Irish Stout, in February 2024. “I always love supporting my own. I think it’s so important,” Erin said in the video.

Harry, who has autism and is nonverbal, is frequently featured in Erin’s posts, often spreading awareness about his condition.

In October 2022, she wrote on Instagram about her commitment to advocating for his needs.

“My child might not have a voice per se but I will never give up fighting for his rights in this world,” the mother of two noted. “No one should have to fight for their needs to be met. To all the parents out there doing their best, we see you, we feel you, we hear you.”

Harry played a major role in Erin’s wedding planning, she told PEOPLE in August 2024, as it was crucial he be at ease throughout the celebration.

“Our absolute must-have for the wedding was ensuring that Harry was as comfortable as possible and able to enjoy the wedding festivities,” she said. “To achieve this, we put several thoughtful measures in place to maximize his comfort and joy.”

Conor and his sisters have a close bond

Conor McGregor with his siblings Erin and Aoife.

Erin McGregor/Instagram

The McGregor siblings’ kinship is frequently showcased on social media, both hyping up one another and extending support of their endeavors professionally and personally.

In 2018, Conor posted on Instagram about Erin’s participation in Dancing with the Stars, writing, “Thank you to everyone voting and supporting my sister on Dancing with the stars. Yup, the McGregors never ever forget it.”

After Conor’s UFC 264 loss to Dustin Poirier in July 2021, resulting in a broken ankle, Erin posted a heartfelt message on her Instagram Stories.

“You’ve given so much and more to so many people @notoriousmma,” she said. “You’ve taken so many on this journey with you & raised the game, watching you has been inspirational, motivational. Sending you love & a speedy recovery #teammcgregor FOREVER.”

For Erin’s birthday in June 2022, Aoife shared a picture with Conor and Erin celebrating at the UFC fighter’s pub in Dublin. “Happy birthday sister, we love you. The best night in the best spot @theblackforgeinn,” she wrote.

More recently, at Erin’s wedding reception, guests enjoyed cocktails and drinks featuring her brother’s liquor brands, Proper Twelve Irish Whiskey and Forged Irish Stout, a subtle nod at the siblings unwavering support of one another.

Erin got married in August 2024

Conor McGregor with his sister Erin on her wedding day in August 2024.

Story of Eve

Erin married longtime partner Kavanagh on Aug. 17, 2024, after getting engaged in December 2022.

The celebration took place at the Cashel Palace Hotel in Tipperary, Ireland. According to Irish Independent, the McGregors booked the entire 42-room venue for a six-figure sum.

In making the ultimate decision to have the wedding close to home, Erin told PEOPLE that it came down to making sure her younger child could enjoy the celebration.

“Everyone asks why we didn’t get married abroad, and the truth is wanting our son Harry to be a part of our day was more important,” she said.

Conor reposted a picture of himself and some friends at the wedding on his Instagram Stories with the caption, “Some buzz second day Erin & Terry’s Wedding. Something else.”