Anna Leigh's 4th great grandmother, Ruth W. Dawson, not too long before she got run over by a train and it killed her. About 1869 or 1870. Liberty, Missouri. Did you know you have 4 grandparents, 8 great grandparents, then 16 great great grandparents, and then 32 great great great? By the time you get back to your 4th great grandparents, you have 64 of them.