This week: Granville, Kansas!
Granville first appeared in Smallville as a neighboring city of Smallville. In the episode "Accelerate" (May 2003), Clark tracks the father of a childhood friend of Lana's to the city. Granville continued to be mentioned or appear once a season until season 8. This is a good name because it plays off the size angle - Small vs Grand - but it's also a reference to Smallville's production. The show (and most genre television) was filmed in Vancouver, which was originally known as Granville.
It appeared in a similar capacity in Superman/Batman #13 (August 2004). It has appeared a few times since then, but details on the internet are scarce so I can't find another mention. I know I've seen it, though, and recently. If you have a lead, let me know!
For the sake of full disclosure, I should point out that Action Comics #791 (May 2002) mentions a "Grandville". This is possibly a case of parallel thinking, or - since the issue is a flashback to Clark's high school days published at the tail end of Smallville season one - possibly a use of information from the Smallville writers' room that hadn't made its way on screen yet. Either way, the spelling of the town's name is a canon immigrant even if the town itself might not be.
One final note: Granville was also seen on a map in Batman: The Brave and the Bold's "Aquaman's Outrageous Adventure!" (January 2010).
