His band mates in the vocal harmony group confirmed he had died in a message shared with fans on Twitter on Wednesday afternoon (11 April).
In a statement, band members Mark Franks, Mike Crawshaw, Darren Everest and Lachie Chapman wrote: “It is with the greatest sadness that we have to announce that our dear friend and brother Timmy has passed away.
“We know this news will be as heartbreaking for you all as it is for us. We appreciate your love and support at this difficult time.”
The cause of the Cork native’s death is unknown, but he had been treated for skin cancer after being diagnosed with stage three malignant melanoma in 2016.
Following his diagnosis, the singer revealed he had found a lump under his arm. He underwent surgery to remove lymph nodes, but doctors later discovered lumps around his collar bone and neck.
He told fans at the time: “I’m a firm believer in positive thinking and prayer. Keep it coming please - I am feeling strong about this journey!”
Many of Timmy’s friends from the world of entertainment have paid tribute to him on Twitter...
Timmy, who usually took lead vocals in The Overtones, joined the band in 2010.
Originally called DYYCE and then Lexi Joe, as The Overtones they achieved four top-ten albums in the UK and their debut, ‘Good Ol’ Fashioned Love’, reached number four in the charts.
Timmy took a break from the band following his cancer diagnosis but returned ahead of their tour, scheduled to start this July.
He had planned to do a charity skydive on 3 May and had raised £5,000 for the Royal Marsden hospital.