Go to your "Home Page" and click on "Edit" Admin Log-in.
Log-in to your site
Find the name of the person you wish to EDIT (people/names)
Next to the persons naame click on the "down arrow". This will give you the following options:
Edit
+add Photos
Parents
+add Spouse #2
+add Son
+add Daughter
Siblings
Delete
Choose "EDIT and fix what you want to fix.