Adrian Fenty is one of our country's great advocates for education reform,' she said in a statement at the time. 'His sense of urgency and record of accomplishment is unparalleled.'

The pair were first friends, sources told the Washington Post, before they started dating at the start of 2013. In June 2014, the couple was pictured at a French open match together.

Powell had married Jobs two years after meeting him when he gave a talk to Stanford Business School while she was a student there.

Their wedding took place in March 1991 at a hotel in Yosemite Valley, and the ceremony was led by a Zen Buddhist monk, Kobun Chino Otogawa, in keeping with Jobs' religious beliefs.

Their eldest child, a son named Reed, was born six months later, and the couple had two daughters, Erin and Eve, in the years following.

While she was on the boards of several companies and charities during his lifetime, it was only after he died that she began to speak publicly to draw attention to the causes that mattered to her.

They were married for 20 years and after his death, she inherited an estate of about $10 billion.

Despite being one of the richest women in the U.S. she has kept a deliberately low profile as she continues with her charitable work.Since Fenty left the mayor's office, he has focused on acting as a consultant to education tech companies and working as a special adviser at Andreessen Horowitz.