Mickey Dolenz was 76 years old at the time of his death. He was born on March 8, 1945. Growing up in Los Angels, California, the United States, he was raised along with his three sisters named  Gemma Marie, Deborah, and Kathleen. 

Likewise, his sister Gemma Marie was given the nickname Coco. Further,  Coco was a regular guest on the set of The Monkees TV show and occasionally a guest performer on records by the Monkees, singing background vocals or duetting with Micky.