I have been trying for 4 years to find anything about him. You were the first hint. I have information about one of his daughters, and I know her mother" name and since she was an indian he probably had other wives. All I knew was his first name "William Baldwin".
I will send you what I have.
I would apperciate what you could me re Sewall and the poem.
I will send you my Baldwin data via E-Main as an attachment.