Thomas Harry Saunders usually called T. H. Saunders, was a British paper-maker known especially for his watermark

Watermark

A watermark is a recognizable image or pattern in paper that appears as various shades of lightness/darkness when viewed by transmitted light , caused by thickness or density variations in the paper...

s, and also a philanthropist.

He was the youngest of the five children of hoop-maker John Saunders, and started a career in paper-making while in his twenties, becoming partner in a paper mill in 1840. He married Mary Marchant in 1844.

He won medals at international exhibitions for his firm's beautiful and innovative light and shade watermarks, which contributed to his success at the Great Exhibition in London in 1851.