JOHNSTON, WILLIAM 
- Born: 1728 Died: 1792
Builder and architect, of Armagh. William Johnston, who was born in 1728, married twice and had four sons, three of whom were 'brought up as architects but with such a knowledge of carpentry as made them sound practical architects'.(1) By his first wife, Margaret Houston, he was the father of RICHARD JOHNSTON and FRANCIS JOHNSTON ; by his second wife, Rachel Dickson, he was the father of WILLIAM JOHNSTON and another son, Andrew, who became president of the Royal College of Surgeons. He died in 1792.(2)
A William Johnston measured Drumsill House, Co. Armagh, in 1789.(3)
(1) The Citizen 4 (July-Dec 1841), cited by E. McParland, 'Francis Johnston, Architect', BIGS 12, nos. 3 & 4 (July-Dec 1969), 62-63.
(2) Genealogical information about the Johnston family was supplied by Miss Caroline Treffgarne and Mrs Amie Gladys Moody, descendants of William Johnston's youngest son, Andrew.
(3) PRONI D288/101 (IAA, Edward McParland files, Acc. 2008/44).
1 work entries listed in chronological order for JOHNSTON, WILLIAM 
|Building:||CO. ARMAGH, KNAPPAGH|
|Nature:||New house, for James Johnston. Payments in building accounts made to William Johnston.
Kevin V. Mulligan, The Buildings of Ireland: South Ulster (2013), 326-7.