I have a George Acker, born June 19, 1827 in Memmelshoffen, Bas-Rhin, Alsace, France, Died September 16, 1910 in Ashton, Dane County, Wisconsin. George was married to my great grandfather Paul Faber's sister Josephina Faber. Paul was married to a Magdalena Acker a cousin to George.
George's parents were Jean Franz Acker, Sr. and Anne Marie Acker, a cousin.
You mention Ashton, WI, Most of the Ackers who settled there came from Memmelshoffen, Bas-Rhin, Alsace, France. Some settled in the Franklin, WI area as well.
Their orgin is Alsanion. You can find the coat of arms by doing google search for Acker coat of arms.