Mumford was born on January 31, 1987 in Anaheim, California. His family moved back to their native England when Mumford was six months old. He attended King's College School in Wimbledon, where he met fellow band member Ben Lovett, before going on to study classics at the University of Edinburgh. Mumford then returned to London to focus on his music career after his first year of study. It was in Edinburgh that he penned most of Mumford & Sons’ debut album, ‘Sigh No More.’
Mumford & Sons second album ‘Babel,’ released in September 2012, debuted at #1 on both the UK Albums Chart and the US Billboard 200. It became the fastest selling album at the time of release in both the US and UK, and won the 2012 Grammy Award for Album of the Year.
Mumford began his musical career playing drums for Laura Marling on tour, along with the other current members of Mumford & Sons. It was through touring with Laura that the bandmates came to the decision to form their own group in 2007.