1925 - 1996
Seymour Cray was an American computer scientist and computer engineer, best known as the founder of Cray Research, Inc. He is often referred to as the "father of supercomputing" for his pioneering work in the development of high-performance computing systems, including the Cray-1, which was the first successful supercomputer. Cray's innovations significantly advanced the fields of computational science and engineering.
Interesting - I use a Mac to help me design the next Cray.