John Nicholson

John Nicholson was a driver on the Eastern Counties Railway
1850 James Samuel lodged patent 13029 for a form of locomotive compounding, giving "continuous expansion" using two cylinders of equal diameter, a system devised by John Nicholson, a driver on the Eastern Counties Railway. Two locomotives were built using this system—one for goods and one for passenger traffic—and, according to papers read by James Samuel before the Institute of Mechanical Engineers in January and April, 1852, the results were "highly satisfactory". Unfortunately, no other record of them is known to survive.
1858 Steam engineer of Wellington Street, Bromley, London.
1858 Improved steam engine by Samuel and Nicholson
1869 Is this the same person as worked with Stewart - Stewart and Nicholson at Blackwall?