Henry Doig, carver and gilder at 6 South St James's Street, Edinburgh, joined with McKechnie & Davies, 69 George St and 10 Calton Hill, to form Doig, McKechnie & Davies, listed as carvers, gilders and picture liners in 1857. The firm cleaned and restored 31 portraits of continental kings, princes and leaders, in the Lothian collection in 1882. (National Archives of Scotland, GD40/8/459, Lothian Muniments, extracted from the National Portrait Gallery Index of British Picture Frame Makers 1600-1950).