I wish I knew... >_<
Amelia Lauren's last name from Kids React is actually not publicly available or disclosed by the React organization to protect the privacy and safety of the kids involved in the show.
Higsby
Donovan?
gough
His name is Bryson Keyser :)
Nicoletti
It's miles William miles.
Seth/Set is the Latin form of the ancient Egyptian god's name.
Mai
There last name is Kyle.
The last name of the family is Duggar.
The last name of the kids in Narnia is Pevensie. Their names are Peter, Susan, Edmund, and Lucy Pevensie.