Business Magnate. Son of the co-founder of one of Britains leading department stores Marks & Spencer, which has shops the world over. It was Simon Marks, who in the 1920s introduced the famous “St. Michael” brand which is famously sold in Marks & Spencer stores. (bio by: Kieran Smith)  Family links:  Parents:  Michael Marks (1859 – 1907)  Spouse:  Miriam Marks (1894 – 1971)* *Calculated relationship