I had a look again for a Robert Dalby born in York, and the only one was Christened 27 Oct 1797 at St John Ousebridge, York. Granted it is a few years out of sunc with his reported age at death, but it is the only one there. His father was Robert Dalby, and his mother Jane Simpson who were married 9 Mar 1797 at Saint Saviour, York.
I looked for Robert the Father, and again there are none in York, the ones that would fit are from Thorner, Collingham, Bridlington, and Haxby. So now I need to find out which one he is. Still it is progress :) Brian