Hathorn rhymes with:
hawthorne, kempthorne, silverthorn, silverthorne, acorn, bralorne, capricorn, colborn, colborne, deerborne, eichorn, hagadorn, halliciforn, hawthorne, heckendorn, kempthorne, langhorn, langhorne, leghorn, newborn, silverthorn, silverthorne, sonneborn
Hathorn sounds like:
hadrian, hathorne, hawthorn, hawthorne, headroom, heidorn, hydron