How did Palladianism spread from Italy to England and Ireland?

Palladianism, the architectural style based on the works and writings of Andrea Palladio, spread from Italy to England and Ireland primarily through the study of his treatise, I quattro libri dell’architettura, and the influence of architects who traveled to Italy.12

Spread to England

The style was first introduced to England by Inigo Jones following his 1613–14 trip to Italy, where he studied Palladio’s buildings and writings firsthand. A more widespread, second phase of English Palladianism emerged in the 1720s, led by Richard Boyle, 3rd Earl of Burlington, and Colen Campbell. This movement was fueled by the publication of Vitruvius Britannicus and a desire among the Whig aristocracy for a rational, restrained alternative to the Baroque style.134

Spread to Ireland

In Ireland, the style was adopted by architects who were inspired by Palladian principles and often influenced by the English movement. A notable example is Castletown House, where the architect Edward Lovett Pearce incorporated Palladian colonnades and pavilions after meeting the Italian architect Alessandro Galilei and studying Palladio’s work during his own travels.25