I love stories like this.  But as a genealogist, I can't help noting that if Isabelle Small Mosby was born in 1833, son David (listed as being born in 1890) would have been born when Isabelle was 57 years old, with the other children arriving when she was even older.  It also says the pioneer David died in 1892, and then lists 4 children born after that date.  I think a generation is missing.  The five children listed must be grandchildren of David and Isabelle.