uncanvassed

But in the very hour he planned to execute this last resort, a rank outsider, an unknown and uncanvassed source, a little runt of a man with more confidence and assurance than his size would warrant, was offering to take over the ranch and assume the problem.

David Lannarck, Midget An Adventure Story George S. Harney

You have, by your notice, uncanvassed, unexpected, and at a period when you certainly could have the least temptation to stoop down to me, flattered me in the most agreeable manner.

The Letters of Horace Walpole, Earl of Orford — Volume 3 Horace Walpole 1757