I can't add anything to your Marquardt names, but the first cemetery you mentioned is probably the OLD GERMAN CEMETERY at West Bloomfield.It's on County Highway HH, on the south side of the road, approximately a mile west of what's left of the "village."As the name implies, this is a VERY old cemetery.Many of the markers are quite ornate and were inscribed in the old German script.Due to their age - and the deterioration of the old script and markers -many are impossible to read.Many others have "sunken in" or been broken over the years, and many graves have only pieces of markers, or none at all.
For the most part, burials in that cemetery took place in chronological order.Rather than having family plots, the deceased were buried one-by-one in the order that they happened.If you know the approximate timeframe of your relative's death, you MAY be able to locate the grave by the dates on the adjacent markers (if they are still there, and if they are still visible).
Unfortunately, the written records for this old cemetery have not survived.Most of the early burials seem to have been made from Christus (now Christ) Lutheran Church on Highway 49 on the south edge of the village, but Christus also used the other cemetery in West Bloomfield (immediately east of the corner of HH and 49)and also the Brushville Cemetery, which is a mile or two south on Hwy. 49.
Best suggestion:contact Christ Lutheran Church (920/987-5283) for a check of their very thorough records.It's been several years since I've been there, but I recall that the records were very well-kept, and they went back to "Day One."
My dad's cousin (now deceased) once told me a story from his childhood (circa 1920) that he helped a group of men who "cleaned up" the cemetery.The broken markers were supposedly picked up and thrown into an old well.
In 1976, Wayne and Alta Guyant transcribed this cemetery (as part of their on-going cemetery project).Their printed listing for this cemetery shows a "Michael Marquard," gestorben (died) 21 October 1869, "alter 32 Jahr" (32 years old).There's also another "Michael Marquard," with the dates of 1837-1869.
Unfortunately, many of the Guyants' notations for this cemetery are "marker not legible," so it may be impossible to determine who's buried there.