I am looking for a Mann Family who moved to Olmstead county from Winona County by 1880. The family was originally from New York via Pennsylvania.

The names I know were in Olmstead were
Isaac Mann b. 1859 Pennsylvania died 1919 Olmstead
his mother Mary E b. 1827 in New York

his sister Druscilla Mann Franklin (wife of Hiram Franklin) b. 1850 New York.

The father of this family was Isaac Mann d. about 1865 Pennsylvania. I believe that his father, Benjamin Mann was the brother my my g-g-g-grandmother, Abiah Mann Greely