Will kellong and his son worked together in the company. But they argued a lot and in the end Will told his son to leave. By 1948, the kellongg Company had sales of more than $100 million. Will Kellongg made millions of dollars, but he continued to live a simple life. He lived in a simple two-story house and preferred to give most of his money to help others, especially children. In 1930, Will kellogg had started the kellogg Foundation to help chidren. Will kellogg died in 1951, at the age of ninety-one.