Willison rhymes with:
gillison, milleson, tillison, alison, allyson, asleson, burleson, burlison, callison, coleson, collison, cornelison, cullison, dollison, elison, ellison, ellyson, gillison, harlison, jellison, kellison, mallison, milleson, mollison, oleson, ollison, rolison, rollison, rollyson, rulison, tillison, tolleson, tollison, wallison
Willison sounds like:
waleson, walk-on, walken, walkin', walkman, wallison, welcome, wellcome, wholesome, wilcoxen, wilcoxon, wilcoxson, wilken, wilkin, wilkison, willson, wilshusen, wilson, wolken, woloszyn, woolson