Thornburgs rhymes with:
thornburg's, thornburgh's, thornburghs, thornburg's, thornburgh's, thornburghs, thornburg's, thornburgh's, thornburghs, freedenberg's, greenberg's, hoffenberg's, katzenberg's, rittenberg's, rosenberg's, rosenbergs, steinberg's, thornburg's, thornburgh's, thornburghs, wallenberg's
Thornburgs sounds like:
thornberg, thornberry's, thornberrys, thornburg, thornburg's, thornburgh, thornburgh's, thornburghs, thornbury's, thornburys, tranberg, turnovers