Harry Diamond has been Rory McIlroy’s caddie and close friend since childhood. He has been Rory’s caddie since 2017, sharing in many victories, including their recent 2025 Masters Tournament.
Similarly, Harry’s love life in his twenties seemed similar to Rory’s tumultuous romance. As of 2025, he is married and has two adorable children.
Harry was an accomplished amateur golfer and proudly represented Ireland in competitive play.
His standout moment came in 2012, when he won the prestigious West of Ireland Championship, further solidifying his reputation in the amateur circuit.
He never turned pro and worked at the family business.
When Rory parted ways with longtime caddie JP Fitzgerald in 2017, he turned to his best mate, Harry, to fill the role. It began a formidable partnership, and Harry quickly proved himself an invaluable asset.
Since then, he has been a steady presence beside Rory, contributing to some of the golfer’s most memorable triumphs.
More than just a caddie, Harry has become a trusted confidant and friend. Rory often refers to him as a “big brother,” highlighting their deep bond.
Despite occasional criticism, Rory has remained constant in his support, praising his calm influence, unwavering dedication, and crucial role in their success.
I met him on the putting green at Holywood Golf Club. We’ve had so many good times together. He’s been like a big brother to me the whole way through my life.
Rory McIlroy
To be able to share this with him after all the close calls that we’ve had, all the crap that he’s had to take from people that don’t know anything about the game, yeah, this one is just as much his as it is mine. He’s a massive part of what I do, and I couldn’t think of anyone better to share it with than him.
Harry Diamond Married Claire Nicholas In 2018
Harry Diamond is married to Claire, but unlike many spouses of high-profile sports figures, his wife has chosen to keep her life private.
She avoids media attention and has been focused on raising their two children away from the spotlight.
Harry and Claire share a low-key, family-oriented lifestyle. Claire is crucial to managing their home and caring for their kids while Harry is on tour for his caddying job.
She is rarely seen at tournaments, and her conscious choice to protect their family’s normalcy amidst the demands of professional golf.
Harry is known for his quiet professionalism, and it appears his wife shares that privacy preference. Their relationship reflects a partnership built on mutual support rather than public attention.
In 2019, Rory’s longtime friend Niall O’Connor filled in as his caddy at the DP World Championship in Dubai while Harry Diamond, Rory’s usual caddy, was on leave awaiting the birth of his first child with his wife.
Similarly, Niall stepped up again three years later at the 2022 RBC Canadian Open, covering for Harry as he prepared to welcome his second child.
Despite the demands of his job, Harry has spoken about the importance of family.
His wife’s support allows him to focus on his role alongside Rory, contributing to one of golf’s most successful player-caddie partnerships.
Nonetheless, Rory took on right-hand man duties as Harry’s best man when he married Claire, and Harry took the same role when Rory married Erica Stoll in 2017.
Harry Diamond Was Engaged To Northern Irish Designer Katie Larmour
Before finding love with his now-wife, Harry Diamond was in a long-term relationship with Northern Irish interior designer Katie Larmour.
The couple dated for five years, and their romance took a serious turn when Harry proposed during a romantic trip to Paris in October 2013.
Interestingly, Harry’s romantic life was similar to that of his close friend Rory.
Two months after Harry’s Parisian proposal, Rory proposed to his then-girlfriend, Caroline Wozniacki, on New Year’s Eve.
However, fate had other plans. In May 2014, Rory called off his engagement to Caroline, shocking fans.
Later that year, Harry and Katie broke up, bringing even more similarities between them into focus. The back-to-back breakups left both men single, marking a transition period.
While the reasons behind their respective splits were kept private, the timing of these events sparked media speculation about whether the friends had confided in or influenced each other during this tumultuous time.
Harry and Rory eventually moved on, and each found lasting love in the following years.
In Case You Didn’t Know
- Harry Diamond’s advice on the last hole helped Rory McIlroy win his 2021 Wells Fargo Championship.
- He has his businesses, including several bars, and his business empire is one reason he didn’t turn pro.
- Rory has known Harry since he was seven, and they grew up together in Holywood, Northern Ireland.
