"Who sold a goodly manor for a song."
Both the sense and the metre require this addition. 'Sold' is the correction of 3rd folio for hold of the 1st.
"Your old ling and your Isbels of the court."
We should, I think, read 'new ling,' as 'old ling' had just been mentioned.
"If thou engrossest all the griefs are thine,
Thou robbest me of a moiety."
No doubt are gives sense, but I should prefer as. I have, however, made no change.