I suspect any of those who have the pre-1500 Certification can help, but we'd need to know all the pertinent information in order to add the child.
Name, birth date, birth place, death date, death place, both parent's names, spouses, source information and such. Or as much of this as you have. And any biographical information to add to the profile would also be helpful. Like why this person was special or what they did with their lives. Did they have children? How many? Things like this will make the profile worthwhile.