Searching for MI families of Ackerman/Auverter relatives

I am searching for the relatives of the David Ackerman/Catharine Auverter line. In particular, I am searching for the parents (lineage) of Vera Ackerman, deceased, last known address was in Big Rapids,MI married to Otto Martz. Also looking for Bernard Ackerman, last known address was in Vicksburg, MI.

If you are related to either of these people, or others in this Ackerman lineage, I would like to hear from you and exchange information.