If something has been added in a different hand, shouldn't there be a note in the (right hand?) margin?
This is what has puzzled me...amongst other things here

...any formal edits and corrections are normally clearly marked with a corresponding clerical note on the l/h margin on the register. There isn't anything showing against this entry. The inference being it was written up at the same time perhaps?
Like Brevitas, have seen too many Scottish BMDs

Haven't come across this before when an additional annotation just sits there and doesn't make sense!
Monica