Presidents Clinton and Obama - and their wives - are expected to join the extended Bush family, with first lady Melania Trump attending on behalf of her husband.
The former president referred to his wife as The Enforcer, a term of endearment bestowed by her family as she ran their household while he pursued careers in the Texas oil business and later politics and public service.
The professor, whose bio says she grew up in Kuwait and Egypt and moved to the U.S. after the Gulf War, continued her criticism of the Bush family and the war in Iraq, and defended her tweets against those who took offense. "To us, she was so much more".
Barbara Bush at LBJ Presidential Library in 2012.
"'Being 12 they were bigger than life and just remember like wow, they are people", she said. It is unclear if death threats played a role in her decision. She was a stay-at-home mom and her husband Bill had been laid off from his job as a sheet metal worker.
'She was a tireless champion for literacy, she was a fierce advocate for the American family and she was a woman of proud patriotism and profound faith, ' Trump also said.
'Our hearts are saddened by her passing but our spirits are lifted by the memories of her goodness and her face'. But, Margie did not reach out to President George H.W. Bush. "He recalled the elder Bush once intervening in a fight between two staffers, telling them, "'If I can meet with Gorbachev, why can't they talk to each other?' I think that's in the Bush DNA".
The email also had a picture of Mrs. Bush: gray hair, eyes crinkly and welcoming, the soft smile that bespoke kindness and great joy - and pearls, three strands of them, elegant but understated. "Someone who loved people and lived to make difference". "It wasn't just a political project for her, it was something that she really believed in". "I love you. Ganny".
Thursday's Celebration of Life Event is one of several ways Bush is being honored around the world and across Houston.
Former First Lady Barbara Bush poses for a portrait on Aug. 23, 2001 in Houston.
She was outspoken, to say the least, sometimes disagreeing publicly with both Bush presidents.
In 1989, Bush visited a Washington, D.C. hospice where several infants, who had been abandoned after being born with the virus, were being treated.
'Barbara Bush was a fabulous First Lady and a woman unlike any other who brought levity, love, and literacy to millions'. "I met the whole family", Fowlkes said.
Houstonian Debbie Taggart became emotional talking about about Bush. "What a gracious lady and a good mother".
It was a historic moment parents wanted their children to witness.
"It was like your own grandmother was reading to you", Garrett said.