Celebrity Parents Former Van Halen Bassist Michael Anthony Mourns Death of Infant Grandson Michael Anthony's grandson Rex Becerra died of heart disease two weeks after he was born, the family announced By Char Adams Published on April 20, 2017 04:15 PM Share Tweet Pin Email Photo: Gregg DeGuire/WireImage Former Van Halen bassist Michael Anthony is grieving the loss of his 2-week-old grandson, who died of heart disease earlier this month. The musician opened up about the death of little Rex Becerra, the son of his eldest daughter, Elisha, in a Facebook post. “I recently lost my grandson Rex after turning just two weeks and one day old. We are tremendously proud of Rex,” he wrote. “In the short time on earth he left a lasting impression that our family will cherish.” The family opened up about the death in a fundraising page with the Los Angeles Children’s Hospital, noting that the boy was “quickly diagnosed with Heart Disease” after his birth on March 20. “Within 9 hours of birth he was transported to two hospitals and ultimately landed at Children’s Hospital LA where he underwent open heart surgery,” the family wrote on the page. They wrote that although the surgery was successful, little Rex never recovered from the procedure. He passed away on April 4, according to the page. Eddie Murphy and Family Mourn Charlie Murphy: ‘Our Hearts Are Heavy’ “After watching him decline to a condition we understood he could not retune, we decided to hold him in our arms while life support … was removed and he peacefully went to join the angels in heaven,” the family continued. In his post, Anthony announced that he’d participate in the hospital’s Walk L.A. in June to support the facility. He invited the public to donate to his family’s team, “Rex and the Heart Beaters.” Anthony was a member of the famous rock band until 2006, according to Billboard.