Complex sentence: Bede states that he abdicated after 37 years, i.e.725-26, whereas the "Anglo-Saxon Chronicle" refers to him abdicating in around 726-28, then traveling to Rome and dying there.
Split into simpler sentences: Bede states that he abdicated after 37 years, i.e.725-26. The "Anglo-Saxon Chronicle" refers to him abdicating in and around 726-28, then traveling to Rome and dying there.