John Gilbert Getty Died from Complications of Accidental Fentanyl Overdose: Medical Examiner
The oil heir died on Nov. 20 at age 52
The cause of death for John Gilbert Getty, the grandson of oil tycoon J. Paul Getty, has been revealed two months after his death at the age of 52.
Getty died of cardiomyopathy and chronic obstructive pulmonary disease, complicated by fentanyl toxicity, the Bexar County Medical Examiner's Office in Texas confirms to PEOPLE.
The office said the manner of death is accidental, and the news was first reported by TMZ.
Getty's death in San Antonio on Nov. 20 was confirmed in a statement to PEOPLE by his composer father Gordon Getty.
"John leaves behind his daughter, Ivy Getty, whom he loved beyond measure, and his brothers Peter and Billy. His brother, Andrew, predeceased John. John's mother, Ann Gilbert Getty, passed this September," the statement read. "John was a talented musician who loved rock and roll. He will be deeply missed."
In November, family spokesman Nathan Ballard told PEOPLE that the Gettys would spend the holidays grieving the deaths of Getty and his mother Ann, a prominent publisher, philanthropist, and paleoanthropologist who died at age 79 following a heart attack, according to The New York Times.
"Losing two loved ones in such a short span of time is especially painful," Ballard said.
Daughter Ivy shared a moving tribute post to her father in the days after losing him, and wrote that he was the "coolest man to ever land on this planet."
"I will forever be the proudest daughter," she wrote on Instagram. "Love you so much Dad....life is cruel sometimes.... I have not one, but two guardian angels watching over me now...here are some of my favorite pictures of him (and selfishly a couple of us)."
RELATED VIDEO: John Gilbert Getty, Grandson of Oil Tycoon J. Paul Getty, Dies at 52
Getty's father Gordon, a classical musician and philanthropist, helped facilitate the sale of his father's business, Getty Oil, following the billionaire's death in 1976, according to The New York Times.
Once the sole benefactor of the family's $4.1 billion trust, he later orchestrated splitting the trust into six separate trusts. According to Forbes, Gordon has a net worth of $2.1 billion.
Gordon, who went on to found PlumpJack Winery with California Gov. Gavin Newsom in 1995, remained married to his wife, publisher Ann Gilbert, until her death.
Their son Andrew Rork Getty was found dead in his Los Angeles home in 2015 at the age of 47.
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