I think it's cool how you can tell the writer's accent from this - something you can rarely do with written English. "halve" and "kin knot" sound nothing like "have" or "cannot" in my native accent, for example.

Similarly, rhymes in Shakespeare's sonnets have been used to work out how Shakespeare spoke the same words, as we no longer pronounce the words the same way (and many of the rhymes have been broken).