This article is about an architectural style. See palladian window for that particular architectural detail.
Palladian is, properly, an English style, but in its name and inspiration it pays tribute to Palladio, the 16th-century Italian architect and writer on architecture. For years, even as more outrageously Baroque and more severely Neoclassical architecture enjoyed popularity, many architects continued to hark back to the work of Inigo Jones, who in the early 17th-century had first brought Palladio's influences coherently to England. Two surviving examples of Inigo Jones' style are the Queen's House, Greenwich and the Banqueting House, Whitehall, London. Some houses in neo-Palladian taste were built by Jones' pupil John Webb, (Wilton House for example) but the English Baroque architecture of Sir Christopher Wren and his followers set style on a different path for more than a generation.
Colen Campbell's Vitruvius Britannicus
Burlington and Kent
Some designs of Mr. Inigo Jones and Mr. Wm. Kent, London, 1744