Hi Jamboedin,
I welcome you to rootschat, hope you enjoy. I searched on Scotsman's Archives for "Greyfriar Bobby's statue" from 1871 onwards. I found out that the sculptor was a William Brodie, and the marble fountain and statue were requisitioned br a Baroness Burdett-Coutts, with permission from the Edinburgh Toun Council. I did not find anything about which brass foundry that carried out the work.
I was surprised to find out that the "Greyfriars Bobby" story maybe a myth. A Councillor Gillies spoke on this at Edinburgh Town Council, and in later years, Feb 9, 1899 a letter to Scotsman from correspondent J.K. said that the story was a joke, and a Mr William Robertson, editor of the "Ayrshire Post" had confirmed this to him, Mr Robertson was connected to the Edinburgh press who ran the story. Could this be the Robertson connection.
Tom
PS Hope your team successful on 19th May.