Gierke's in Stralsund late 1800's
I am searching for information on the Gierke family in Stralsund from mid 1800's. Wilhelm F. A. immigrated to US in 1894. My Grandmother, Johanna Hirsch Gierke followed in 1900 and her children followed in 1901 with the exception of one daughter, Martha, who stayed behind with the Father, Auguste who I believed died in mid 1904. Martha's married name was Kallach. The last I know of her existance was 1950?
This branch of the Gierke's came first to Indianapolis Indiana and then two moved to Toledo Ohio mid 1915?. Any information about homeland area in Germany greatly appreciated.