Granddaughter's husband
... granddaughter (son's daughter) 孙女儿; 孙女儿 granddaughter's husband 孙女婿; 孙女婿 great-granddaughter 曾孙女 ...
Son's daughter's husband
叔丈人Wife's uncle 孙女Son's daughter; Granddaughter 孙女婿Son's daughter's husband; Granddaughter's husband 孙媳夫Son's son's wife; Grandson's wife ..
孙女婿,读音是sūn nǚ xù,汉语词汇,解释为孙女的丈夫。