Halpin rhymes with:
galpin, galpin, gilpin, arpin, aspin, backspin, coppin, crespin, crispin, daspin, flippin, galpin, gilpin, hennepin, jospin, juarez-espin, jupin, lapin, ongpin, pepin, peppin, pippin, protropin, ruxpin, somatotropin, steppin', tappin, tippin, toppin, toupin, trupin, turpin, vipin
Halpin sounds like:
halfman, halfmann, helfman, hilbun, hillhaven, holbein, holben, holven