Myron - If you haven't already,

Go to http://www.platec.net/wchs/index.html check the death index book, page, and line for Elias and for Mary... order copies of the death certificates from the Waseca County Historical Society for $2.00 ea.

You can obtain Certified copies from the Courthouse for $11.00 each

Check for their parents on the certificates.

Also, E. J. Cheeney shows in the 1885 State Census Index, page 183... must have been recorded just before he passed away.

Regards, Tom Doyle, Fresno, CA