Mum Grainne McCullough set up a gofundme page for her son, five-year-old Bryan 'Bru' who had sepsis last year and now has Cerebral palsy. Though the donation was made anonymously, McCullough was so overwhelmed  when she received the 10,000 euro donation from McGregor that she shared a screenshot of the private contribution in an effort to thank him for his kindness.

@TheNotoriousMMA we are forever grateful 🙏🏼🙏🏼🙏🏼 I will never forget what u have done for my boy u truly are a legend 💖💖💖💖💖💖💖 pic.twitter.com/Gryz5wWOti

— Grainne McCullough (@GrainneMcCullou) September 27, 2018

Bru's gofundme account reads:  "This is my last idea for my son as I've spent the last year trying to get him proper medical care, he has a plastic tube [Nasogastric intubation] in his nose since last September. He has seen no dietitian, we are desperate at this stage, we are looking for money for my son Bryan to get private care and the help he deserves....he had sepsis last year and is now unable to walk or eat."

Following the donation, Bru's mother said, "Conor has made our dreams come true in so many ways, and I can verify it wasn’t for a publicity stunt, he privately donated to us. I just had to let him know how much we appreciate it, we plan to use it for Bru’s care and what he needs to get back to as good as he can be."

Though he doesn't often get - or seek - the recognition such deeds deserve, this is not the first large-scale charitable donation The Notorious has made. Before the Mayweather Fight he donated €50,000 towards helping Ireland's homeless, and previously helped raise over €800,000 for Irish children's hospitals.