Obregon rhymes with:
berrigan, carrigan, corrigan, garrigan, harrigan, kerrigan, landrigan, merrigan, stoffregen, bennigan, berrigan, branigan, brannigan, calligan, cardigan, carrigan, corrigan, culligan, donigan, dunnigan, finigan, finnigan, flanigan, flannigan, galligan, garrigan, gavigan, halligan, hanigan, hannigan, harrigan, hartigan, henigan, hennigan, hooligan, kerrigan, landrigan, lanigan, madigan, merrigan, michigan, milligan, mulligan, nelligan, rattigan, rustigan, shawinigan, shenanigan, stoffregen, swanigan
Obregon sounds like:
o'bregon, oberhausen, oppression, overcame, overcome, overseen, overson