The life of Jill Biden, an educator who worked full-time while Joe Biden was Vice President, defends him from protesters, and is a crucial part of his 2020 campaign

While growing up, Jill moved around a lot, eventually settling in Willow Grove, Pennsylvania. She spent most of her childhood there and adopted a slight Philly accent as well as a lifelong love for local sports teams.

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That year she also started college at the University of Delaware, majoring in English.

In 1972, she and Stevenson opened the Stone Balloon Tavern and Concert Hall by the University of Delaware. It would go on to become one of the country's most successful college bars.

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Playboy magazine once listed the bar and concert hall as "one of the 100 Top College Bars in America," according to its website

The bar hosted iconic American artists, including Bruce Springsteen and the E Street Band.

This wasn't the only job Jill did in her college years. She also modeled for a local agency, but she insists she "wasn't a model."

"I might've done five jobs where you get paid, like, 20 bucks," she told Vogue in 2008. "But I wasn't a model."

By 1975, she and Stevenson had drifted apart and filed for divorce that year. She was in her junior year at the time, and decided to take the year off: "Things were a little too rough, too emotional. But I knew I would finish," she said.

She would go on to graduate with a Bachelor of Arts from the University of Delaware in 1975, according to the university.

At the time, Joe Biden was a 33-year-old Delaware senator, widowed after a horrific car accident three years prior killed his wife Neilia and one-year-old daughter, Naomi.

A few weeks after the 1972 December election, Neilia's station wagon was hit by a tractor-trailer as she pulled out from an intersection.

Joe and Neilia's sons Hunter and Beau, who were sitting in the backseat with their sister Naomi, survived the accident with minor injuries. Naomi didn't.

Eventually, she said yes, and they married in an intimate ceremony in New York on June 17, 1977. The couple took the Biden sons on their honeymoon.

The entire family was "all marrying each other," Vogue reported, paraphrasing Joe and Jill.

As Joe built his political career, Jill completed a master's degree in education and worked as a teacher - all while pregnant.

Meanwhile, Joe Biden was going to work and commuting from Washington, DC, to Wilmington, Delaware on Amtrak nightly, according to the New York Times.

In 1987, Jill Biden earned a second Master of Arts degree in English from Villanova University, according to the Philadelphia Inquirer.

But this changed in 2004 when President George W. Bush was reelected. Then Jill urged Joe to run for president again because she was "so against" the 2003 Iraq war.

"I literally wore black for a week. I just could not believe that he won, because I felt that things were already so bad. I was so against the Iraq War. And I said to Joe: 'You've got to change this, you have to change this,'" she was quoted as saying in The Washington Post.

But she still continued to teach, only joining her husband on the campaign trail on the weekends.

"My wife, Jill, who you'll meet soon, who's drop-dead gorgeous," Joe Biden told a crowd in Springfield, Illinois, on the day he was announced as Barack Obama's running mate, according to Politico.

"My wife, Jill, she also has a doctorate degree, which is a problem," he added jokingly.

While working as a teacher, she deliberately distanced herself from her famous husband. Some of her students didn't even know she was Joe Biden's wife, calling her only by her preferred name, "Dr. B."

While she had pictures of her children and grandchildren at work, she never put one up of her husband.

According to Politico, she also tried to get her accompanying secret service agents to dress so they wouldn't be noticeable.

"My standard line when students ask me if I am married to the VP is to say that I am one of his relatives. That usually quiets them," she once told The New York Times.

She also jumped up to protect her husband from a protester who stormed the stage at his Super Tuesday victory speech in Los Angeles in March. The moment quickly became a meme, and she was hailed "a hero" online.

Biden has always been fiercely loyal. In a speech at the Democratic National Convention, she said that Joe Biden would bring the country "together and make us whole" - the same way he did when the family went through difficult times.

Recalling the car crash that killed Joe Biden's first wife and his daughter, Biden said: "I fell in love with a man and two little boys standing in the wreckage of unthinkable loss," according to NBC.

"How do you make a broken family whole?" Jill asked. "The same way you make a nation whole. With love and understanding, and with small acts of kindness. With bravery. With unwavering faith."