Complex sentence: Byron paid for the boy's education and wrote in his will that Giraud was to receive £7,000 (about £as of) upon Byron's death; years after Byron and Giraud parted company, Byron changed his will to remove Giraud.
Split into simpler sentences: Byron paid for the boy's education and wrote in his will that Giraud was to receive £7,000 (about £as of) upon Byron's death. However, years after Byron and Giraud parted company, Byron changed his will to remove Giraud.