You're very welcome.
I've been looking at the history of Gourock generally and our street specifically, hence I keep finding gems like these in association with the house names. Basically, I've just kept doing Google searches on {house name Gourock} As more records go online, so I keep finding different results from the same searches on Google.
Maryville is the house next door to ours, or maybe I should say the two houses next door to ours. I've noticed some online posters get the names of houses mixed up, or assume two different names are actually the same house, as the names sometimes appear in both Greenock and Gourock, and there are often variants:
Maryville, Marymount, Normount, Barrwood, Barrhill, Craigard, Craigend, Craigbank, Maybank, and so on.
