O'fallon rhymes with:
ofallon, fallon, ofallon, phalen, alan, allan, allen, ballon, callan, callen, dalen, fallon, gallon, luallen, mallon, malon, mccallon, ofallon, palen, phalen, scallan, scallon, tallon, talon, vandalen
O'fallon sounds like:
o'flynn, ofallon, oflynn, opalina, opaline