Simplify the following text for a Grade 9 native English-speaking person.
Original: Some of his most famous works are : the poem The Lady of the Lake and the novels Ivanhoe , Rob Roy , Waverley , The Heart of Midlothian and The Bride of Lammermoor .
Simplified: Famous titles include Ivanhoe , Rob Roy , The Lady of The Lake , Waverley , The Heart of Midlothian and The Bride of Lammermoor .