There are several accounts of the Tell legend. The earliest sources give an account of the apple-shot, Tell's escape and the ensuing rebellion. The assassination of Gessler is not mentioned in the Tellenlied, but is already present in the White Book of Sarnen account.

The legend as told by Tschudi (ca. 1570) goes as follows: William Tell, who originally came from Bürglen, was known as a strong man and an expert shot with the crossbow. In his time, the Habsburg emperors of Austria were seeking to dominate Uri. Albrecht (or Hermann) Gessler, the newly appointed Austrian Vogt of Altdorf, raised a pole in the village's central square, hung his hat on top of it, and demanded that all the townsfolk bow before the hat. On 18 November 1307, Tell visited Altdorf with his young son and passed by the hat, publicly refusing to bow to it, and so was arrested. Gessler — intrigued by Tell's famed marksmanship, yet resentful of his defiance — devised a cruel punishment: Tell and his son would be executed, but he could redeem his life by shooting an apple off the head of his son, Walter, in a single attempt. Tell split the apple with a bolt from his crossbow.