Nancy Walker Bush Ellis (February 4, 1926 – January 10, 2021) was an American environmentalist and political campaigner. Bush Ellis was born in Milton, Massachusetts.
She was the only sister of former U.S. President George H. W. Bush, and aunt of both former President George W. Bush and the former governor of Florida John Ellis "Jeb" Bush.
Although she had been a liberal Democrat and an environmentalist. She joined the Republican Party in 1988 when her brother ran for president.
Ellis was hospitalized on December 30, 2020 from COVID-19 in Concord, Massachusetts. She died on January 10, 2021 at an assisted living facility from the infection, aged 94.