Oliver Prinz von Anhalt, the adopted son of recently deceased icon Zsa Zsa Gabor, has died.
The 45-year-old son of Frederic Prinz von Anhalt was grievously injured in a Los Angeles motorcycle accident on Dec. 18, the day that Gabor died at her home at the age of 99.
Oliver passed away from his injuries on Dec. 25, after being taken to a local hospital following the accident, his brother Marcus Prinz von Anhalt stated, the Daily Mail reports.
The German man of business had not woken up from a coma he had fallen into.
Marcus posted the news of his brother's death on social media, informing fans and friends that his brother had died some days after his motorcycle crashed into a truck.
Oliver -- known as Oliver Bendig before his adoption as an adult -- flew into Los Angeles the day after visiting his brother in Germany.
Marcus posted a memorial video on Instagram Dec. 26 that said: "Forever Brothers!!! Live the Afterlife in the fullest like you did before!"
He also posted on Facebook: "My brother!!! You will stay forever in my heart. I can't understand the world!!! Why???"
The pair had been adopted later in life by Zsa Zsa and Frederic and were not blood relations.
Frederic had previously talked proudly of adopting people who paid him to have his royal title, despite the legitimacy of the title being openly questioned.
Reportedly, Frederic hadn't learned of the accident until he was contacted by the coroner on the evening of Dec. 26.
Frederic believed his son was in Germany still, TMZ reports.
Oliver immigrated to the United States 20 years ago and was a resident of Beverly Hills. His mansion there is currently for sale and carries a $4.8 million price tag.
His adoptive mother starred in several films, including "How The World Turns" and "Moulin Rouge."
The Hungarian actress endured a stroke before falling into a coma and dying of cardiopulmonary arrest at the Ronald Reagan UCLA Medical Center of Los Angeles.
The star had longstanding health issues. She fell into a coma after a 2002 vehicle accident, recovered from strokes in 2005 and 2007, had her right leg amputated in 2011 and endured a feeding tube-related lung infection in February 2016.