The Merry Men were a band of outlaws who robbed from the rich and gave to the poor in the late 12th century.
By the 21st century, people believed them to be a mere myth, a sentiment shared by the Twelfth Doctor. They took the name "Merry Men" after hearing Clara Oswald use it. (TV: Robot of Sherwood)
The Merry Men, lead by Robin, gave a ride to Iris Wildthyme who was in a restaurant in the late 2000s. (AUDIO: Wildthyme at Large)
Their sanctuary was Sherwood Forest outside Nottingham, specifically the Major Oak, which by 2050 became the last oak tree in existence. (TV: The Last Oak Tree)