Nicholas and Mara Laubenthal are my great grandparents. They are both buried in Calvary Cemetery in Mt. Pleasant, Michigan. Nicholas is misspelled as "Nicholes" on the larger family stone, and yes, the civil war marker has "Lopendahl" on it. Their youngest child, Mary Luella "Mae" (my grandmother) is also buried there with her husband Francis Henry Lynch. Several other family graves are there, as well.
Mary Anne Niebyl (Arlington, Virginia)