There are two editions to John Clark's profile needed:
1. Click on the link "[add/remove spouse]" at the right hand side column below the name of Francis Louisa (Jones) Penn. Go to the bottom of the emerging page, tick Francis Louisa and click on "REMOVE SPOUSE OF JOHN CLARK BURTON".
2. Go back to John Clark's profile in edit mode. Click on "[add mother]". In the emerging page enter Francis ID (Jones-69464) in A.) and click "GO".
After completing those two editions Francis will be John Clark's mother instead of his wife.
Please post any issue you might find in completing the editions.