John Slezer, army officer and topographical surveyor, is believed to have come from a German speaking area of northern Europe. He spent long periods in the Scottish military utilising his surveying skills. At Lennoxlove (Lethington), East Lothian Slezer is believed to have drawn to plans with John Wyck during the late-17th century. These appear to show the layout of the park and the formal gardens and are likely to be survey plans rather than proposals. The Slezer/Wyck drawings show a triple avenue leading to the west which has since been lost but the avenues to the North, East and South Parks can still be traced. Slezer died in Holyrood in November 1717. His lasting achievement was the design and publication of his Theatrum Scotiae, which went through seven editions (1693; two in 1718; 1719; 1728–9; 1797; 1814).