One of the characters Shamus Culhane tried when he took over Paramount Cartoon Studios was Sir Blur, a nearsighted knight voiced by Allen Swift.
While I unabashedly love most of the Paramount entries from Culhane, I consider Sir Blur shorts to be the weakest of the bunch. The character was essentially Mr. Magoo that takes place in the medieval time period and the jokes can get old fast. Oh well, not all can be gems.
The character managed to appear in four cartoons before being retired. Below are all the films:
A Wedding Knight (Paramount, 1966) by WackyJacky
The Blacksheep Blacksmith (Paramount, 1967) by WackyJacky