Ian Harry Calthorpe Lawson Johnston (1938-2023) (1938–2023) Parents Barbara Anstruther-Gough-Calthorpe Ian Lawson Johnston, 2nd Baron Luke Children Percy FitzRoy Lawson Johnston Henrietta Lemina Lawson Johnston Siblings Arthur Lawson Johnston, 3rd Baron Luke Philip Lawson Johnston George Andrew Lawson Johnston Caroline Jean Lawson Johnston Partners Lady Pamela Lemina Gordon