"William Carnegie, of Mildmay, is the second child and eldest son of James Carnegie, a farmer of Aberdeenshire, Scotland, where he was born in 1830. When in his twenty-fourth year, he came to Canada and settled in the Township of Nelson and worked there and near Toronto as a farm hand for three years. In 1857 he married Mary, daughter of George Dow, from Aberdeenshire, Scotland, and next year settled in Carrick. He subsequently resided some years in Wroxeter, Huron County, but returned to Carrick in 1875 and settled at what is now the Village of Mildmay, which has been 'chiefly built up under his supervision and by his enterprise.
Mr. Carnegie now owns a large portion of the above village, besides a great deal of country property, and is considered one of the most “solid” men of Bruce County, a position which has been attained solely by his own efforts, and in a manner which has not detracted from his popularity; but, on the other hand, his good qualities as a business man and as a citizen are proverbial, and although he has never sought public representative positions he is, as her has ever been since his first advent to Carrick, one of its most highly esteemed residents."
Belden 1880 Atlas of the County of Bruce