Sorry, all I have on William is b. 1866 d. 1943. However, Ola was born (according to the biography in the Montrose Library) in Burnside Il, so there may be some info to be found there. There are some Marshall's in the Montrose Mohawks History of Montrose Schools. 1938 has Lana Marshall. 1942 has Robert Marshall. These could be grandchildren or another Marshall line entirely. Yes, Frank is the one that married Mandy Van Ausdall. Any help would be much appreciated.