Original sentence: The literary source closest to the pagan period is probably Beowulf, which seems to have been composed about 680-730 CE, and therefore within the lifetime of pagans from the Anglo-Saxon kingdom of Suffolk, which remained officially pagan until 680
Edited sentence: The literary source closest to the heathen period is probably Beowulf, which seems to have been composed about 680-730 CE, and therefore within the lifetime of heathens from the Anglo-Saxon kingdom of Suffolk, which remained officially heathen until 680