Simplify the following text for a Grade 7 native English-speaking person.
Original: Interestingly enough , Ptolemy XIII sent Pompey 's head to Caesar in an effort to win his favor , but Caesar was not pleased about receiving the head of his son-in-law in a box .
Simplified: Ptolemy XIII sent Pompey 's head to Caesar in an effort to win his favor , but Caesar was not pleased with the gift .