A shop or vendor from whom you can buy anything.
The manufacturer of anything, when you can't remember the real maker.
A type of Weed.
"Dude, my car sounds a bit funny, I think I'll have to take it down to Franklin Marshall's and get it looked at"
"I'm just off to Franklin Marshall's for a box of screws"
"Hey man, you want some weed?"
"No Thanks, I've already got some Franklin Marshall."