The Southern General Archivist says, "I can confirm that we hold a substantial archive from the Southern General Hospital (formerly Govan Parochial Poorhouse Hospital) at Merryflats. I am sorry to have to say that we cannot help you as we do not possess any records of Govan War Hospital / Govan Military Hospital. The records of temporary military hospitals were all gathered up in 1919 for use by the Ministry of Pensions. The Ministry had been created to deal with claims for disability pensions, widows’ pensions, etc. To the best of my knowledge and belief, the records of temporary military hospitals are in the custody of the War Pensions Branch of the Department of Social Security. Unfortunately the DSS does not provide a research service. There is some uncertainty as to where Govan War Hospital / Govan Military Hospital was located. The minutes of the Parish Council show that they offered the army the use of premises at Merryflats and were turned down. One possibility is that the terms Govan War Hospital and Govan Military Hospital may refer to the British Red Cross Hospital in Bellahouston Park. This, however, makes little difference as the Bellahouston records seem to have been collected up with the rest."
I believe the archivist is wrong about Merrylats and Bellahouston although both are within Govan Parish.
1. Historic Environment Scotland places them at two different locations (both basically where you would expect them to be)
2.The National Archives in
England have some records - searching for "merryflats" brings up three references to soldiers being treated in Merryflats Military Hospital in Govan (Ministry of Health series MH106) - In a similar vein searching for Bellahouston also brings up references to Bellahouston Hospital (although after the war)
I do not believe that the two terms are interchangeable although the archivist may be correct regarding the records having been swept up by the Ministry of Health and a visit to the National Archives in Kew may be required