Santillanes rhymes with:
arellanes, arellanes, magallanes, monoplanes, warplanes, alkanes, arellanes, bloodstains, cobain's, hurricane's, hurricanes, kardashian's, magallanes, membranes, messiaen's, migraines, monoplanes, outgains, sarbanes, warplanes, windowpanes
Santillanes sounds like:
sandling, shandling, swindling