Your ancestry on who gave birth to what is always interesting but not much to put stock in. So many factors. Look what they ate 100 years ago vs what we eat now. Each individuals PH, diet, lifestyle,blah ,blah the unknown variables would be so hard to guess! Until recently my husbands family were only boy producers past 30 years and my side all girls for the past 50! Its a fun look but if its gonna make you tear your hair out and stress, DONT LOOK lol. Go look at ancestry for fun things like a family name that hasn't been used in generations