My great, great grandmother was Augusta Jaecke. She came to the US in 1848 from Prussia (b 4 Jun 1839). She married Herman Burow in Hustisford (Dodge Co.) WI in 1859. I do not know where she lived from 1848 to 1859, but a couple of her children & other descendants lived in Waukesha at various times.
Her obituary and probate records state her name as Jaecke.