He was also the father to George W. Bush, the 43rd president of the United States.
The day after her death, Mr Bush was hospitalised with a blood infection.
The former president, who served as a USA naval aviator during World War Two, had attended his wife's funeral in Houston in a wheelchair and wore a pair of colorful socks festooned with books, in honor of his late wife's commitment to literacy. The family also thanked those who cared for and prayed for their beloved dad in recent days.
US President Donald Trump released a statement on Twitter saying President Bush inspired generations of his fellow Americans to public service.
Bush sought the 1980 Republican presidential nomination but lost it to then-California governor, Ronald Reagan, who tapped Bush as his vice presidential running mate in two successful national campaigns, in 1980 and again four years later.
They were married for 73 years.
Algerian government confirms the visit of Saudi Crown Prince
In his remarks, Saudi Crown Prince Mohammed bin Salman reiterated the strong and long relations between Saudi Arabia and Tunisia. President Abdel Fatah al-Sisi received on Monday, Nov. 26 Bin Salman upon his arrival at Cairo International Airport.
Serving in the Second World War as a Navy pilot, he was shot down in the Pacific in 1994.
He Graduated in 1948 with a degree in economics (Yale University).
Months into his presidency he was faced with the dissolution of the Soviet Union and he oversaw the removal of Panamanian dictator Manuel Noriega. Bush was able to create an global coalition and led a military strike to drive Hussein out of the country.
On August 2, 1990, Bush faced what was arguably his greatest test. Iraq, led by Saddam Hussein, invaded Kuwait after accusing it of stealing oil and conspiring to influence oil prices.
From former presidents to Bush's family, support poured in from across the world. Around 425,000 U.S. troops and 118,000 coalition forces were mobilized for weeks of aerial strikes and a 100-hour ground battle.