The ancestry of Ann Kendall is somewhat unusual. All her American ancestors have either the surname of Kendall or of Mason. That’s it!
This is true because Ann’s father, John Kendall, married his niece, Mary Mason (the daughter of his sister, Eleanor Kendall Mason). Mary Mason was Ann Kendall’s mother, but she was also Ann Kendall’s first cousin, even though they were almost 40 years apart in age!