Following Walt's death, Roy O. Disney took over as President, CEO and President of the company. One of his first acts was to rename Disney World as "Walt Disney World" in honor of his brother and his vision.keep their families in harmony, the two families were never reportedly close and separated even further after Roy O.'s death in 1971. Diane's husband and Walt's son-in-law, Ron, became CEO in the early 1980s. by Disney. In 1984, Roy E. replaced him by Eisner, according to People.