The eldest son of the Reverend James D. Wheaton, a Methodist minister and Jessie O. Holmes, the daughter of a Methodist minister, James Lorenzo Wheaton was born on 11 January 1924 in Meridian, Mississippi. As an infant the family moved to Hattiesburg, Mississippi. He attended public schools in Hattiesburg, Meridian and Yazoo City, Mississippi. ...
Had experience working in funeral homes, which helped in his voicing of OMM in THX 1138 (1971). Director George Lucas asked him to "pretend you are talking to the bereaved". Wheaton even went on to portray a funeral home director in two episodes of Sanford and Son (1972).