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William Kinghorn (c1792-1874)
1874 Obituary 
The death is announced of Mr. Kinghorn, contractor, who belonged to an old Leith family, and was favourably known not only in Leith, but in many parts of Scotland. He died in his 83rd year.
Prior to 1836 he was in partnership with his father as a builder and contractor. After that time he carried on business on his own account, until ten or twelve years ago, when he retired.
Mr. Kinghorn was contractor for part of the Leith Harbour Works. He had contracts on the railway between Edinburgh, Perth, and Dundee, between Thornton and Dumfermline, and between Ayr and Maybole.
His success in the building of lighthouses was acknowledged by the Commissioners of Northern Lighthouses and their engineers, Messrs. Stevenson. At least four or five lighthouses were erected by him.