Charles Atkinson and his partner, Thomas Witlam Atkinson, 
published a series of lithographs in London in 1829, Gothic Ornaments selected from the different Churches and Cathedrals in England.

A contemporary review in The Gentleman’s Magazine, commented on the works thus:

They are highly useful and from their accuracy in size and detail
will be of great assistance to the working mason. 

When he arrived in Ross in November 1833, the freestone blocks had been prepared. He would have stood before their undecorated plainness with the plan of an arched stone bridge in his hand, designed by John Lee Archer, Colonial Architect and Civil Engineer, drafted by himself.

Imagine, therefore, his flight of fancy; he was prone to grandiosity. 

He was a young Londoner amongst eighty-three hardened prisoners.
He was their advocate but probably their gull. 

The work began on the east bank with the foundations of the cutwaters from which would rise piers and arches. 

So, when was the first arch stone carved and by whom, if Daniel Herbert was not there?