(b. - d.1657) Architect. Son of John Mylne (d. 1621), he assisted his father in the building of a bridge over the River Tay at Perth. He came to Edinburgh to construct a statue of James VI on the occasion of his first visit to Scotland, but was also involved in works in Dundee (1618), Falkland (1619), Aberdeen (1622), Drummond Castle (1629) and a water-pond at the Palace of Holyroodhouse (1629). Appointed as Master Mason to the Crown (1631), he created a splendid sundial at Holyroodhouse and altered St. Giles to become the Cathedral Church for the Bishopric of Edinburgh. In 1636, he resigned following a disagreement with King Charles I (1600-49), and retired to Dundee, to undertake private commissions. His daughter, Barbara, was accused of witch-craft and his sons Alexander and John were noted in their contributions to architecture and building.