Also, small wonder. It's not at all (or hardly) surprising, as in With the goalie out with a sprained ankle, it's no wonder you lost the game, or If he finished off all of the turkey, small wonder he has a stomachache. [c. a.d. 900]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.