I have 2 old hand written ledgers Stirling District Board of control, Register of Lunatics in Lunatic wards of poorhouses, and Stirling district Lunacy board Minute book of Visiting Committee, the latter starts March 1890, and gives a facinating insight in the day to day life in the Asylum, and the first one gives the name of the patients, both male and female, date of admission, parish of residence, parish of settlement, rate of maintenance, date of discharge or death. and remarks. I think they will be the earliest books you will ever fin about the hospital, the first dates of admissions 1s about 1871 as far as i see, there are a number of inmates from Dumbarton listed, You are welcome to have a look if its any help, i live in Larbert, thanks.