John McComb Sr. was an American architect known for his contributions to the design of various buildings in the 19th century. He played a significant role in shaping the architectural landscape of New York City and was involved in several notable projects, including the construction of St. Patrick's Cathedral. Born in 1794, McComb's work often reflected the styles of his time, blending elements of Gothic Revival and Neoclassicism. His designs were characterized by their attention to detail and craftsmanship, making him a respected figure in the field of architecture during his lifetime. He passed away in 1858, leaving a lasting legacy.