Wightman rhymes with:
waitman, weightman, weitman, whiteman, breitman, brightman, heitman, heitmann, kreitman, leitman, reitman, steidtmann, waitman, weightman, weitman, whiteman
Wightman sounds like:
wasden, weightman, westen, westin, westman, westmin, weston, whiston, wigton, wisdom