Olin's rhymes with:
bricklin's, brocklin's, bullins, carlin's, chaplin's, chitlins, collins, collins', cullins, dollins, drumlin's, dublin's, echlin's, gardolin's, gillins, globulins, goblins, harlin's, harpercollins, helen's, heslin's, hollins, kaelin's, kallins, kremlin's, macklin's, merlins, miglin's, pullins, rawlins, rollins, rollins', rosalyn's, stalin's, sullins
Olin's sounds like:
oiling, olenick, olenik, olmos, oolong