You didn’t put the right parents and you want to change them (or delete). Above all, cut the wrong links.

• For that, go to the profile

• On the right you have the family circle
  
• Click on the pencil
  
• The window Change your family circle appears
  
• Click on the scissors on the right of the father.
• You must confirm your choice.
  
• Click on Yes to delete the link
  
• Do the same procedure for the mother.
  
• You can now add the rightful parents

Don’t worry, nobody is deleted. That action only cut the links. You’ll find the person with the information enter in the search of person.