Humphrey Lhuyd prepared two very important maps in British cartography, the map of Wales and that of England and Wales. Both of which are usually regarded as having been first published in the 1573 edition of Abraham Ortelius' 'Theatrum Orbis Terrarum', the first modern atlas. This example is from a Latin text edition with pagination that matches the 1573 (including Additamentum), 1574 and 1575 editions.
Approx 47cms by 38cms.