We don't believe that Friedrich (Frederick) Jasmer who married Augusta Gerth is the son of Michael Jasmer. The dates don't match.
Go to www.ancestry.com
and search for Frederick Jasmer. You will find a reference to a Message Board entry that was written, quite a while ago, by Carol Slack. Carol speculates that this Frederick could be a Cousin or Brother of the Michael Jasmer who lived in Winona County, Minnesota.
The Michael and Anna (Ludcke) Jasmer Family is listed, with their ages, in the 1870 and 1880 Census as living in Norton, Winona County, Minnesota. I have extensive information about John (Johann) M. Jasmer; b.
There are quite a few Frederick Jasmer listings in various databases. The problem is that they can be listed as Friedrich, Frederick, Fredrick or Fred; so, it is difficult if to say if one is looking at information about the proper person.
I thought that I had uploaded complete information about the Jasmer Surname, to the Ancestry.com World Family Tree. However, in checking, I find that some connections are not shown. I've had a problem because of the way that I accumulate information in many different files and then append and merge information that fits together. I need to clean up my Jasmer files and put a master file together that shows everything I think I know.
I'll send you an invitation to join my Extended Family Tree Web Site. You might find some things of interest in the Jasmer Family Tree that is shown there.