Simplify the following text for a Grade 10 native English-speaking person.
Original: He has three grandchildren , Jennifer , Gabriel and Matthew Swaggart , and three great-grandchildren , Samantha , Abby and Ryder Swaggart .
Simplified: He has three grandchildren , Jennifer , Gabriel and Matthew Swaggart , and has two great-grandchildren , Samantha and Ryder Swaggart .