"Augustus Welby Northmore Pugin" is a proper noun, specifically the name of an important English architect from the 19th century. Here's a simple explanation:
Augustus Welby Northmore Pugin (often just called Pugin) was an English architect who was very influential in the revival of Gothic architecture during the 1800s. Gothic architecture is a style that includes features like pointed arches, tall buildings, and intricate decorations. Pugin believed in designing buildings that reflected the values and aesthetics of the Gothic period.
Augustus Welby Northmore Pugin was a significant figure in architecture, known for his role in the Gothic Revival.