I don't doubt that he slept peacefully.

Subsequent acquaintance with him convinced me that he can go to sleep almost anywhere in any circumstances.
And that is a very great gift, for it enables its owner to wear down any dozen who must sleep for stated hours at fixed intervals.

Grim snatches his whenever the chance comes, and goes without with apparent indifference.

He told me once that he dreams nearly all the time he is asleep.

But the dreams don't seem to trouble him.