Jeffersonian rhymes with:
jacksonian, smithsonian, usoniam, amazonian, andonian, apollonian, babylonian, bostonian, caledonian, devonian, draconian, estonian, gorgonian, houstonian, jacksonian, melkonian, newtonian, oregonian, patagonian, plutonian, simonian, smithsonian, usoniam, washingtonian
Jeffersonian sounds like:
jasperson, jefferson, jespersen, jesperson