The writer/TV producer passed away on Thursday (19Jul12) in Santa Monica, California at the age of 76. The cause of her death was not available as WENN went to press, but she was known to have spent many years battling severe scoliosis and osteoporosis.
Guthrie enjoyed a successful career as a writer, producing biographies of stars including Woody Allen and Cary Grant, and she won an Emmy Award nomination for her work on 1994 TV movie A Place for Annie, starring Sissy Spacek.
She also helped launch her daughter's acting career and worked as her manager.
Young paid tribute to her mother on her Facebook.com page, posting a series of pictures and thanking fans for their messages of condolence.
She writes, "Thank you everybody for the good wishes."