I just recently found out that my great-great-grandmother's maiden name was Achterberg, first name Auguste. I think she would have been born in 1865, though where I don't know.
She married August Ehley, and together they had two children:
Anna Caroline Gottliebe Ehley, b. July 26, 1886 in Mequon, Wisconsin. Anna would be my great-grandmother. She married John Lederer, and one of their ten children, Eleanore, was my grandmother. On Anna's headstone at Old Settler's Rest Cemetery in Mequon her date of birth is listed as being 1884, but I think I remember my mom saying that when my grandmother bought the stone for her parents, she wasn't entirely sure if she had gotten Anna's birth year correct. Anna was baptised on August 15th 1886, witnesses Anna Achterberg, Caroline Ehley, and Gottlieb Wagner.
August Alfred Friedrich Ehley, b. November 3, 1887 and baptised on December 27th, witnesses August Achterberg, Christlieb Achterberg, and Catherine Ehley.
If anyone thinks that they know of a link, please contact me. Thanks.