ok - a little o/t - not branding per se - a lot of airports have names or codes that came of their first incarnation as a modern airport - Orlando airport was formerly McCoy Air Force Base - hence MCO) (they keep the codes even after the "name" change
In my corner of the world, O'Hare International Airport has the code ORD -nothing to do with Chicago or O'Hare, but rather it's first "name" Orchard Field Airport (which it became after wwii) and subsequently renamed to honor Edward O'Hare, the U.S. Navy's first flying ace and Medal of Honor recipient in World War II.
On the other hand, MDW is Midway Airport - which was Chicago's airport long before O'Hare came into being.
Sometimes the codes make perfect sense, sometimes there's a story to tell... (Kansas city is MCI...??? I know why - do you ;-)