Магнус Эрикссон
The chronicle is written in "knittelvers", a form of doggerel, and in its oldest version is 4543 lines long. It begins in 1229, with the reign of Eric XI of Sweden (d. 1250) but focuses on the period 1250-1319, ending in the year when the three-year-old Magnus IV of Sweden came to the throne. It survives in six manuscripts from the fifteenth century and a further fourteen from the sixteenth and seventeenth.