I realize this message is quite old so yu mahave found this information already:
Laura Karlena Capper was the daughter of George Franklin Capper 1872-1935 and Clara Belle Beard 1872-1914. George was the son of William Capper & Martha Davis. William was the son of Martin Capper. I have been resarching a different Capper family but have your family in my database "just in case" they connect somewhere in the past.