The inventory and sale bill for Catherine Jane Ervin's estate, probated in 1849, are available via Ancestry. In the collection, "Indiana, Wills and Probate Records, 1798-1999," select Blackford County and "Court Order and Jury Journals, 1842-1862; Inventories, 1839-1849; Estray Book, 1839-1857." Catherine's paperwork begins on image 242.
ETA: Here is the ...
According to the Indiana State Family and Social Services Administration website, many of the early patient records were destroyed. Their site says:
There are some archive books listing very limited patient information. To contact Richmond State Hospital for genealogy records contact Jay Wenning the director of our medical records department.
That page ...
That roster does in fact include a Private Edward Irwin as a member of Company 'M'(page with printed number 293 in the pdf).
However, the gravestone inscription is slightly longer than in your question:
B. F. ERVIN
2ND IND. CAV.
Assuming that "CO, D." means Company 'D' in the roster, we can check that group's membership in more detail. There ...
Looks like it's Sprinklesburgh – an old name for the town that is now Newburgh, Warrick Co., Indiana.
The original name was after founder John Sprinkle. According to this Newburgh History, Sprinklesburgh was united with Newburg in 1841 to form Newburgh.
There is not likely to be any specific information about your relative's diagnosis and treatment, merely admission and discharge dates. The hospital's website has a page about genealogy requests that says:
Unfortunately, we do not have the original medical records of every patient treated at Richmond State Hospital. Records keeping laws and practices have ...
There is also a museum most don't know about that is in the Administration building at the state hospital that is open to the public. In the museum, there are books that contain patients names, diagnoses and even medications. There are also pictures. Maybe you can find some answers there.
The hospital's website says:
During the hospital's 100 year ...
Indiana has every-name census all the way back to 1850.
If you contact the Logansport-Cass County Public Library, they may have some information on the family in their files. Their address: 616 East Broadway, Logansport IN 46947. (574) 753-6383. firstname.lastname@example.org.IN.us Their web site is logan.lib.IN.us
If you are on Ancestry.com or HeritageQuest Online ...