John Woolman: He Agreed to Set Her Free.

“A neighbour… desired me to write his will: I took notes, and, amongst other things, he told me to which of his children he gave his young negro: I considered the pain and distress he was in, and knew not how it would end, so I wrote his will, save only that part concerning his slave, and carrying it to his bedside, read it to him, and then told him in a friendly way, that I could not write any instruments by which my fellow-creatures were made slaves, without bringing trouble on my own mind. I let him know that I charged nothing for what I had done, and desired to be excused from doing the other part in the way he proposed. Then we had a serious conference on the subject, and at length, he agreeing to set her free, I finished his will.”

— John Woolman, 1756 (source)
Quaker preacher and abolitionist