You seem to have a pretty good handle on the Johnson's of Johnston County, NC.
What's the chance you would know the parents and/or family of my Moses Johnson, died 1804 in Johnston Co. He married Lucy---last name still unknown. Lucy lived to between 1830-40.
Their children were:
Rebecca married Benjamin Bell, Lucy married Shadrack Lassiter, Thomas married Ann Allen, Luranny married William Durham, Jarrott/Gerrard married Susan Winnefred Johnson, Moses, Josiah, and Benjamin who died young.
Any idea would help, as this file had been at the bottom of the pile for awhile!