Our American environmentalist, political campaigner, the only sister of Former President George H. W. Bush and the Aunt of Former President George W. Bush, Nancy Walker Bush Ellis, died of complications from Covid 19 on January 10, 2021, at the age of 94.As of January 10, 2021, Nancy Walker Bush Ellis was the oldest Bush sibling when she died; she outlived George H. W. Bush by 170 days.