The co-founder of The Allman Brothers Band (with his brother Duane) and heralded Southern rock star was 69. As Billboard reported, he was diagnosed with hepatitis C in 1999 and underwent a liver transplant in 2010.
Cher, 71, was married to Allman from 1975-1979 and he was the father of her second child, son Elijah Blue, now 40. Pop culture icon Cher wed Allman right after her divorce from first husband Sonny Bono, with whom she had daughter-turned-son Chaz Bono.
"She knows she has to be strong. She's trying to hold it together," a source told RadarOnline.com.
Cher cancelled a film project after both Allman and Georgia took a turn for the worse.
While Georgia is bravely hanging in there, Allman has now passed on.
The source confided to RadarOnline.com that Cher and her ex-husband were friends at the time of his death.
"They've had some rocky times, and he put her through hell during their marriage. But she's forgiven him everything," the source said.
Allman wrote such classic songs as "Midnight Rider," "Melissa" and "Whipping Post."
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A statement posted to the singer's official website said Allman "passed away peacefully at his home in Savannah, Georgia. Gregg struggled with many health issues over the past several years. During that time, Gregg considered being on the road playing music with his brothers and solo band for his beloved fans, essential medicine for his soul. Playing music lifted him up and kept him going during the toughest of times."
Allman's longtime manager and close friend Michael Lehman said, according to The Hollywood Reporter, "I have lost a dear friend and the world has lost a brilliant pioneer in music. He was a kind and gentle soul with the best laugh I ever heard. His love for his family and bandmates was passionate as was the love he had for his extraordinary fans. Gregg was an incredible partner and an even better friend. We will all miss him."
Rocker Allman is survived by his wife, Shannon Allman, his children, Devon, Elijah Blue, Delilah Island Kurtom and Layla Brooklyn Allman and three grandchildren.
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