Thomas Chalmers Borthwick (1813–88)
Scottish livestock farmer. Farmed 4,000 acres at Hopsrig, Westerkirk, Dumfriesshire, 1871.
Census returns of Scotland 1871 (The National Archives of Scotland: Westerkirk 1/7
Scotland, national probate index (calendar of confirmations and inventories), 1876–1936 (Ancestry.com, accessed 20 January 2020)
Scotland, select births and baptisms, 1564–1950 (Ancestry.com, accessed 20 January 2020)