I'm trying to find any information I can on the sisters

Sophie Storck (1844-1905)
and
Vincencia Storck (1847-1926)

Vincencia (Could be spelled Vincenzia) married Frank Zak (who died in 1885).

They had the following known children:
Adolph Robert Zak (1873-1942)
Anna Marie Zak (1877-1946)
Joseph George Zak (1879-1962)
John M Zak (1881-1948)


I found a 1900 Census placing them at
Kingman, Renville, Minnesota.

Any help would be appreciated.

Thank,

-Ken