Henry Ernest Dudeney/Puzzles and Curious Problems/40 - An Epitaph (A.D. 1538)

by : $40$

 * An Epitaph (A.D. $1538$)
 * Two grandmothers, with their two granddaughters;
 * Two husbands, with their two wives;
 * Two fathers, with their two daughters;
 * Two mothers, with their two sons;
 * Two maidens, with their two mothers;
 * Two sisters, with their two brothers;
 * ''Yet only six in all lie buried here;
 * All born legitimate, from incest clear.


 * How might this happen?