Namesakes
Fictional Characters from Television:
1 character
Addison Montgomery 2005; 2007 Grey's Anatomy; Private Practice 
Notable Artists:
1 cartoonist
Mort Walker (a.k.a. Addison) 1923-2018
Notable Politicians and Statespeople:
1 politician
Mitch McConnell (a.k.a. Addison) 1942-