Knudtson rhymes with:
knutson, knutson, albertsen, albertson, arntson, augustson, batson, beatson, bengtson, bentsen, bentson, berntsen, berntson, blitzen, butson, butzen, butzin, clementson, culbertson, cuthbertson, datsun, dotson, dutson, ellertson, engebretsen, engebretson, fortson, garretson, gatson, gerritsen, gilbertson, hartson, hitson, hutson, ibbotson, jetson, kitson, knutsen, knutson, lambertson, latson, lauritsen, letson, matsen, matson, mattson, reinertsen, reinertson, ricketson, ritson, robertson, routson, severtson, sivertsen, sivertson, stetson, syvertsen, tillotson, watson, weitzen, whitson, wrightson, yeltsin
Knudtson sounds like:
kentuckian, knudsen, knudson, knutsen, knutson, knutzen, kuntzman