Hey, I found this site a week ago and I've been looking through it every day. Awesome :)
A lot of places still avoid certain numbers for largely superstitious reasons...some businesses will skip from floor 12 to 14, almost all the schools I've been to are missing locker 666...
All residential facilities have/had an association with clerical staff for weekly religious services and for funerals. Where I work we have a lovely cemetery that is used for people without known relatives or whose families were so happy with their care that they wanted them to be buried where they lived. Like all facilities at one time, numbers were used on markers for a short period (although there are names on the markers now instead - found in old records) and the cemetery was not always as well tended as now (due to financial costs - the small amounts of monies received from funding sources were used on the living), but over the past several decades almost all facilities have improved their cemeteries and have tried to go through what records still exist to find out who was buried where.
Although many people are unhappy about "inadequate burial practices" for people who live/lived in residential facilities, it is rare that people follow through to ask the government or state to research a facility's records to find out who was buried and exactly where, and even less likely that people will then pay out of pocket to assure that new markers are placed and names accorded. Funeral services, burials, cremation, and memorial markers are quite expensive. In truth, people who live in the community don't always get headstones, whether or not they have disabilities of any sort.
The high mortality rate is the same for people with psychiatric disabilities who do not live in residential facilities. Increased incidence of cardiovascular disease is the primary cause.
"Cardiovascular disease risk factors were generally similar for patients with schizophrenia and patients with bipolar disorder . . . Both groups of patients had a higher prevalence of overweight, obesity, central obesity, and hypertension than the general population . . . and daily smoking was significantly more frequent in the two patient groups than in the general population."
Astrid Brate Birkenaes, J Clin Psychiatry, 2007;68:917-923.
"People with severe psychiatric disorders have a significantly higher mortality rate than people who don't."
All the infection that comes from living in relatively close quarters doesn't help, either.
I can only assume that they were given a general ceremony or prayer and buried in a simple casket; the ones at this hospital seemed pretty nice - http://www.opacity.us/...418_bed_of_straw.htm