Henderson, Coulborn and Co
From Graces Guide
1853 The Rotary was built by Henderson, Coulborn and Co, Renfrew, with a rotary engine, the second example of Napier's patent design, which had been made for him by Thomas Wingate and Co.
1857 Henry C. Lobnitz joined the engineering and ship building firm of James Henderson and Son, Ship Dock, Renfrew.
1865 See 1865 Clyde Shipbuilders for detail of the tonnage produced
1866 Launches a screw driven steam ship 'Guardina' of about 500 tons 
Sources of Information
- The Engineer of 2nd February 1866 p78