Simplify the following text for a Grade 3 native English-speaking person.
Original: When Caesar arrived in Egypt two days later , Ptolemy presented him with Pompey 's severed head ; Caesar was enraged . Although he was Caesar 's political enemy , Pompey was a Roman consul and the widower of Caesar 's only legitimate daughter , Julia ( who died in childbirth with Pompey 's son ) .
Simplified: They were Pompey and Julius Caesar .