According to The Telegraph, Sandberg later posted a photo to Facebook of herself with Detlor and Zuckerberg.
It was accompanied by the caption, ‘Honored to meet Florence Detlor, who at 101 years old is the oldest registered Facebook user. Thank you for visiting us Florence!’
According to her profile Detlor graduated from Occidental College in Los Angeles in 1932, and joined Facebook in August 2009.
She lives in Menlo Park, California, where Facebook now has its headquarters.