Due to this family connection, when Henry Schultz died in 1863 the infant Robert was sent to Galashiels to be raised by his aunt Jane, the wife of Dr Alexander Cunningham Tweedie.
Here he also became acquainted with the newly created Art Workers Guild set up by Shaw's other assistants: Edward Schroeder Prior, Ernest Newton, Mervyn Macartney and William Richard Lethaby.
Schultz and Barnsley returned to Britain in 1890 and set up office together at 14 Gray's Square Inn, adjacent to a friend and former colleague, Francis William Troup.
In 1890 he also officially joined the Art Workers Guild and secured a commission by his travel sponsor, the 3rd Marquess of Bute, for alterations at Mount Stuart House and to St John's Lodge in Regent's Park.
Schultz's mosaic design, based partly on St. Andrew's connections with Constantinople is in keeping with this key work of the Byzantine Revival in the United Kingdom.
[1] The association that Robert Weir Schultz and Sydney Barnsley had with the British School in Athens, which had only been founded in 1886, led to them producing hundreds of drawings and photographs of ancient monuments that they systematically investigated and recorded.
Their work was to form the nucleus of “a collection of approximately fifteen hundred drawings and one thousand photographs of major Byzantine monuments of the Mediterranean basin, Italy, Turkey, Greece, as well as Asia Minor and the Near East, dating between 1888 and 1949.