Welcome to History Hub
I found 2 possible matches on findagrave.com
There is a family tree on familysearch.org for this Richard Giese. familysearch.org is a free website you just need to register to use.
Click on the above links to see more.....includes family members
Dear Ms. Rediske,
Thank you for posting your request on History Hub!
We suggest that you submit a request for information about your grandfather’s death to the Vital Records Services of the Wisconsin Department of Health Services. According to their website for Genealogy Research, the earliest death records in their custody vary by county, but all begin in the 19th century.
Next, we located the publication A History of Sunny View Sanatorium, 1915-1971 that was published by the Winnebago County Executive Office, in the library of the University of Wisconsin, Madison and may be helpful for your research. The sanatorium is described as “Winnebago County's tuberculosis sanatorium [in] Oshkosh, Wisconsin.” According to information available on the website for the Wisconsin Historical Society, the Muirdale Sanitorium was located in Wauwatosa, Wisconsin. You may wish to contact these organizations, the Milwaukee County Historical Society, and the Wauwatosa Historical Society to confirm the name and location of the sanitarium you are interested in and to see if they can offer you any further assistance. This unofficial website also provides a list of sanitariums, asylums, and other institutions in Wisconsin that may be useful.
We hope this information is helpful. Best of luck with your family research!