Fidalgo rhymes with:
golgo, kilgo, abrego, albergo, amerigo, arango, argo, arrigo, bango, bingo, bizango, borrego, boslego, buitrago, burgo, camargo, citgo, congo, crago, craigo, crego, dango, darrigo, desantiago, diego, dingo, domingo, drago, dugo, durango, ego, embargo, ergo, farago, flamingo, frago, frigo, gallego, golgo, grego, griego, gringo, hugo, hyogo, iago, igo, igoe, ilopango, ingo, jago, jagow, key-largo, kilgo, knogo, lago, lagow, lango, largo, latigo, lego, lingo, logo, longo, lugo, luongo, lythgoe, mandigo, mango, manigo, margo, margot, mccargo, mingo, montego, montelongo, monzingo, mozingo, mungo, ortego, oswego, otsego, pago_pago, pedigo, pengo, perigo, perrigo, pherigo, prego, provigo, rabago, rago, rego, rengo, rigo, ringo, rodrigo, roggow, sago, samaniego, san-diego, santiago, sogo, sotolongo, spago, spargo, stango, steego, swango, takasago, tamargo, tango, tarango, tobago, togo, tourangeau, trego, trigo, urgo, vargo, venango, verdugo, vigo, vingo, virago, virgo, vitiligo, wingo, winnebago, yearago, yugo, zarlengo, zhivago
Fidalgo sounds like:
fiddles, fidel's, fidelco, foothills, footloose