Proconsul rhymes with:
consul, consul, sponsel, bensel, bluepencil, cancel, consul, council, counsel, counsell, gensel, hansel, hansell, hensel, hensil, insel, kinsel, kinsell, mansel, mansell, munsell, pencil, reinsel, sinsel, sponsel, stansel, stansell, stencel, tensile, tinsel, tonsil, townsel, townsell, vancil, vensel, weisensel, wensel