@Entity
public class Person{

   @Id
   private Integer id;
   
   @OneToMany(targetEntity=FirstName.class, fetch = FetchType.EAGER, orphanRemoval=true)
   @Cascade( {CascadeType.ALL} )
   @JoinColumn(name = "id_person")
   private Collection<FirstName> name = new ArrayList<>();

   @OneToMany(targetEntity=SecondName.class, fetch = FetchType.EAGER, orphanRemoval=true)
   @Cascade( {CascadeType.ALL} )
   @JoinColumn(name = "id_person")
   private Collection<SecondName> secondName = new ArrayList<>();
   }

@MappedSuperclass
public abstract class Name {
@Id
   @GeneratedValue(strategy=GenerationType.TABLE, generator="imie_seq")
   @SequenceGenerator(name="imie_seq", sequenceName="imie_seq", allocationSize=1)
   protected Integer id;
   
   protected TypeNameEnum nameType;
   
   protected String name;
}

@Entity
@Table(name="Name")
public class FirstName extends Name{

   public FirstName(){
      nameType = TypeNameEnum.name;
   }
}

@Entity
@Table(name="Name")
public class SecondName extends Name{
   
   public SecondName(){
      nameType = TypeNameEnum.secondaryName;
   }
}

public enum TypeNameEnum {
   name,
   secondaryName
}