Complex sentence: Pugin died in the house in 1852 at the age of only 40 and was buried in St Augustine's Church next to the house, which was also designed by him and completed by his eldest son, Edward Pugin, who was also an architect.
Split into simpler sentences: Pugin died in the house in 1852 at the age of only 40. He was buried at St Augustine's Church next to the house, which was also designed by him and completed by his eldest son, Edward Pugin, who was also an architect.