Hi there, I was also curious about the Robinson family tree. My grandad was William Robinson , he was born in 1906 or 7. When I was a kid I visited his brothers Sammy and Robert. One of them lived in Port Glasgow and the other in a village called Strone near Dunoon. I cant remember which was which, I was very young at the time. I never heard of a sister called Emily. My grandparents only had one child. My mum Kathleen. Sadly she died about 15 years ago. I forgot to mention that they all moved to Glasgow in the late 50s early 60s. They were officially COI.
I also looked at the 1911 census and can only assume my great grandparents were Samuel and Catherine but Im not 100% sure. I hope this information helps.