That's Ted Dwayne, Mumford & Sons' bassist who also handles double bass, guitar, drums and backing vocals. The band's official website includes Ted's photography blog.
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That's a banjo player, and M&S are famous for breaking out with that plucky sound, but THIS is Dave Carroll of Sons of Maxwell, the Canadian music duo known for their mix of Celtic- and pop-folk music.
That would be Mumford's very own Ben Lovett, who plays keyboard and piano in the band, but his secret talent is the accordion (which you can hear on a few M&S songs). Fun fact: Lovett produced on Ellie Goulding's debut album 'Lights.'
It's Ragnar "Raggi" Thorhalisson, of Icelandic wunderkinds Of Monsters and Men; he is not a member of Mumford & Sons, so far as we know.
That would be Keith Jeffery, of Australian alt-rock outfit Atlas Genius. You probably know them for their breakout single "Trojans," which is not a Mumford & Sons song.
Another banjo, but no Mumfy! Above you see Scott Avett, lead singer of the Avett Brothers.
That would be none other than James Shaw, founder/lead guitarist of Canadian indie rock darlings Metric. He won the Producer of the Year award at the 2013 Juno Awards, Canada's domestic equivalent of the GRAMMYs.
That is actually Winston Marshall, the band's very own banjoist, who is credited on 'Wilder Mind' as "WN5TN." He's the youngest member of the outfit.
Of course he is! That's Marcus Mumford, the namesake of the beloved rock band. Fun fact: He and actress and Carey Mulligan were childhood pen pals who lost touch, but reconnected as adults and eventually got married. How's that for a Hollywood love story?
Theo Wargo/Getty Images for Firefly Music Festival
There are only four members in Mumford & Sons, not five. This is Wesley Schultz, the lead vocalist and guitarist of "Ho Hey" band the Lumineers.