https://finance.yahoo.com/news/microsoft-co-founder-paul-allen-224310504.html > Allen died from complications of non-Hodgkin's lymphoma, a type of cancer, the Allen family said in a statement. > In early October, Allen had revealed he was being treated for the non-Hodgkin's lymphoma, which he also was treated for in 2009. He had an earlier brush with Hodgkin's lymphoma, another cancer, in the early 1980s before leaving Microsoft.