( PEOPLE.com ) -- Theodore `` Teddy '' Forstmann , a veteran business leader and philanthropist who was romantically linked to Padma Lakshmi , died Sunday . He was 71 . Forstmann suffered from brain cancer , his spokesman tells The New York Times . Although the famed billionaire never married , he dated `` Top Chef '' host Lakshmi , 41 , over the last several years . Their relationship made headlines when she gave birth to now 1-year-old daughter Krishna in February 2010 , which spawned speculation over the identity of the father . ( Venture capitalist Adam Dell was later revealed as the father . ) Forstmann was also briefly linked to Princess Diana . According to `` The Diana Chronicles '' by Newsweek and The Daily Beast editor Tina Brown , the two were plotting to wed in the last weeks of her life . Forstmann , who invested in companies ranging from Gulfstream Aerospace to Dr. Pepper , is survived by his two sons , Siya and Everest , brothers Anthony and John , and sisters Marina Forstmann Day and Elissa Forstmann Moran . See the full article at PEOPLE.com . © 2011 People and Time Inc. All rights reserved .
Theodore Forstmann suffered from brain cancer . Diana dated ` `` The Diana Chronicles '' host Diana , the last several years , over the last several years . Forstmann was also briefly linked to Princess Forstmann .