Hartigan rhymes with:
rattigan, rustigan, bennigan, berrigan, branigan, brannigan, calligan, cardigan, carrigan, corrigan, culligan, donigan, dunnigan, finigan, finnigan, flanigan, flannigan, galligan, garrigan, gavigan, halligan, hanigan, hannigan, harrigan, henigan, hennigan, hooligan, kerrigan, landrigan, lanigan, madigan, merrigan, michigan, milligan, mulligan, nelligan, obregon, rattigan, rustigan, shawinigan, shenanigan, stoffregen, swanigan
Hartigan sounds like:
hardison, hartson, heartscan, herdsmen