John Trenery 1803-1864, was a British-born engineer who established himself in Norway. For a time he was the master mechanic at the copper works at Kåfjord in Finnmark.
In 1843 he moved to Trondheim as co-owner and chief engineer of an engineering works established in Øvre Bakklandet by three merchants (Christian Ludvig Schreiner, Herman Christian Garmann and Arild Huitfeldt).
In 1850, in co-operation with Trondhjems Skipsværft, the firm launched "Nidelven", the first Norwegian-made steamboat. In 1862 they produced the first Norwegian steam locomotive, "Thrønderen".
In 1872, the enterprise merged with Trolla Brug to become Trondhjems Mekaniske Værksted (TMV [Trondheim Mechanical Workshop]).
For two decades Trenery was a vital contributor to the development of a high standard of mechanical expertise in Trondheim.
From 1851 he was the director of Trondhjems Tegneskole [Trondheim school of technical drawing], which taught draughting to workers.
In 1863 John Trenery fell seriously ill and died in August 1864. His grave in old Bakke churchyard.
The above information is condensed from information produced by Einar Rædergård[1]