The Rambams White Hair

Parshas Hashavua חיי שרה Bava Basra -16b - 141a                                      SHIDDUCH CRISIS וה' ברך את אברהם בכל, ר"מ אומר שלא היה לו בת The Ksav Sofer (Parshas Chaya Sarah) writes, that in a letter the Rambam wrote to his son, The Rambam blames his daughter for his white hair. It came about from the worries, he had, finding a Shidduch for her, with someone befitting his family. The Ramban writes, had Avraham have had a daughter he would have had worries whom to give her away to. The Ksav Sofer explains, even with all of Avraham's riches etc. it was a blessing of not having a daughter so there won't be any worries of marrying her off.