Watler "Wat" Tyler (4 January 1341 – 15 June 1381) was a leader of the English Peasants' Revolt of 1381.

Knowledge of Tyler's early life is very limited, and derives mostly through the records of his enemies. Historians believe he was born in Essex, but are not sure why he crossed the Thames Estuary to Kent. Local tradition in Brenchley was that he was born there.

With news of rebellions of the upper classes in France and Flanders, the English readied for an insurrection. John Ball, Jack Straw and others advocated the destruction of the hierarchical feudal system. Ball, like Tyler, held egalitarian values, though the medieval historian Jean Froissart describes Ball as insane. Other contemporaries suggest that he was involved with the Lollard movement. Such harsh, often unfounded attitudes toward the rebels are common among chroniclers, given that the latter belonged to the educated upper classes, who were usually the targets of rebellion rather than supporters of it. Thus, it is difficult to get an accurate sense of the actual aims and goals of rebels as their side of the story is not represented in historical accounts. Despite this difficulty, Tyler's name does appear in many monk scripts that were discovered throughout the years.

Sivert Høyem (born 22 January 1976) is a Norwegian singer, best known as the vocalist of the rock band Madrugada. After the band broke up due to the death of Robert Burås in 2007, he has enjoyed success as a solo artist and is also a member of The Volunteers with whom he released the album Exiles in 2006.

Høyem rose to fame in the late 1990s when Madrugada made their Norwegian breakthrough with debut album Industrial Silence. The band members included Sivert Høyem (vocals), Frode Jacobsen (bass), and Robert Burås (guitar). After the death of Burås on 12 July 2007 Høyem and Jacobsen decided to finish recording their latest album. The album, entitled Madrugada, was released on 21 January 2008. After the release of the album the band announced they would split after one last tour. They performed their last ever concert on 15 November 2008 at Oslo Spektrum in Oslo-Norway.

He has the last few years had success as a solo artist, releasing the albums Ladies and Gentlemen of the Opposition (2004), Moon Landing (2009) and Long Slow Distance (2011).