But the family tree of Jim Morrison can be traced back to the Outer Hebrides in the 18th century – a little-known fact highlighted by Jeremy Corbyn on his tour of marginal seats in Scotland.

The Labour leader revealed he was a fan of the late Riders On The Storm star last month on a visit to Lewis, which was once home to the singer’s ancestors.

Jeremy Corbyn at Callanish Stones during a visit to the Isle of Lewis.

Jim’s former brother-in-law, author Alan Graham, says the Doors frontman would have seen the politician as a kindred spirit.

Alan, who lives in California, said: “Jim and Jeremy are like two peas in a pod – vociferous, passionate, rebellious lads.

“The FBI had a file on Jim and he was considered a dangerous leftie.

“Just look at the lyrics of the song Five To One – ‘They got the guns/But we got the numbers.’

“Morrison was almost a revolutionary talking that kind of stuff at concerts.