His third marriage brought him new responsibilities as a conservationist. Working together, the couple continued long-term work to restore Markenfield Hall, the moated medieval Grantley family seat near Ripon – once the home of John de Markenfield who, with his uncle, Richard Norton, joined the Rising of the North in 1569, when Catholics revolted against Queen Elizabeth I.
In 2008 they won the first annual restoration award sponsored by Sotheby’s and the Historic Houses Association for their work on Markenfield’s 13th-century Great Hall, which had been described as “forlorn” in a 1999 architect’s report, having barely been touched since 1570.
Ian Curteis is survived by his wife, by the two sons from his first marriage, two stepdaughters from his second and two stepsons from his third.
Ian Curteis, born May 1 1935, died November 24 2021