Funeral held 4 months after his death - somehow they managed to have a brief open casket and then after the service he was cremated and his grandson stated that he planned to scatter the ashes:
Charles Manson's funeral held four months after his death - CNN
Charles Manson Funeral Held in California – Rolling Stone
Charles Manson cremated after private funeral with open casket
Charles Manson's funeral held four months after his death - CNN
Charles Manson Funeral Held in California – Rolling Stone
Charles Manson cremated after private funeral with open casket