Thomas Hornor (1785–1844) was an English land surveyor, artist, and inventor.
Born on 12 June 1785 into the Quaker family of a grocer in Hull, Hornor (sometimes spelled Horner) learned surveying and engineering from his brother-in-law. Soon after 1800 he surveyed the Free Grammar School in Manchester, and was settled in London by 1807. He lived in Kentish Town, Chancery Lane, and then Church Court, Inner Temple, whence he undertook valuations as well as surveys and levelling of canals and drains. He produced a huge plan of Clerkenwell (1808 and 1813), and advocated a decorative style for 'picturesque landscape gardening' and 'panoramic chorometry' for drawing out estate plans, as described in 'Description of an Improved Method of Delineating Estates' (1813).
In 1814 Hornor was advertising himself in S Wales as a ‘Pictural Delineator of Estates’ and soliciting commissions for the summer. He was successful and became wealthy producing bound portfolio volumes of plans, panoramas, watercolour paintings, all linked by exquisite copperplate handwritten accounts of tours in the area, for at least nine wealthy families with whom he appears to have mixed as an equal; at least one still bears the price, 500 guineas. The paintings  have sometimes been broken out from the original volumes and are interesting from topographic (especially the Neath and Taff valleys, and Glamorgan coast), historic (e.g. tin works around Neath; iron works at Merthyr Tydfil), technical (demonstrating the use of his camera obscura; use of fold-outs), and artistic (the same scene is often worked up in different ways) points of view. He has been noted as having had a penchant for painting moonlit scenes, and he also painted inside the Porth-yr-Ogof cave, whereas other artists painted only from outside.
In excellent condition, this print is ready to hang
The print size is 18" by 12" increasing to 23 by 17 to allow for surround and frame