(April 1859- 6 July 1941), businessman. (Walter DeRochie, W. J. DeRochie) Born at Tyotown, GC. Parents: Joseph DeRochie and his wife Mary Tierney. He and his brother Curtis P. DeRochie, in the partnership known as DeRochie Bros., ran the Cornwall Foundry and Machine Works, in Cornwall, Ont. This business was originally established by John E. Loney and John Tobin, and the 2 DeRochie brothers bought it about 1887. Elinor Senior points out that the business was one of the “secondary industries” encouraged in Cornwall by the need to provide supporting services for the sizeable mills that had developed in Cornwall. The DeRochie foundry and machine works firm was known for skill in repairing the machinery for cotton and woollen mills. It also made products including iron and brass castings, pulleys, and school and church seats. Walter DeRochie invented a water motor which could be used to run home and office machinery, and which was used by the Freeholder newspaper in Cornwall to drive press equipment. Walter DeRochie was mayor of Cornwall in 1902 and 1908. About 1923 he retired from the Cornwall business and moved to Long Beach, Calif. It was at Long Beach that he died. (children surviving him: 7) Roman Catholic. He was married to Elizabeth Bradley.

Standard Freeholder 7 & 8 July 1941 * Old Boys 1906 [137: portrait] * Harkness 297: Curtis P. DeRochie in group portrait, Glengarrians in Cornwall, 1896 * description of the firm: Senior 245