Barbara J. Warner, the 68-year-old mother of shock rocker Marilyn Manson (a.k.a. Brian Warner), died on May 13 after a long battle with dementia.

The singer wrote on his Facebook page earlier today: "Mother, to the first and greatest believer in me … I hope I see you again someday. But not now, because I have more things I promised I would do. I'll make you proud and satisfied that you know that you made the son you wanted. I love you."

An obituary posted by CantonRep.com reads as follows: "Barbara J. Warner, age 68, passed peacefully on Tuesday after a long battle with dementia. She was a wife, lover, mother and friend who will be missed forever. Survived by her husband, Hugh A. Warner; and a son, Brian H. Warner. Services were private. The Lamiell Funeral Home is in charge of arrangements. In lieu of flowers donations may be made to the Alzheimer's Association. Condolences may be made to www.lamiellfuneralhome.com."