Short answers, pulled from the story.
The Västgötalagen emerged in the early 13th century as a written code for the provinces of Västergötland and Dalsland. This legal document stands as the oldest Swedish text written in Latin script.
Eskil Magnusson likely instigated the creation of the Västgötalagen during this period. The earliest complete text dates to 1281, though small fragments from an older version exist around 1250.
Two distinct versions of the law survive today known as the Elder and Younger Westrogothic laws. Scholars continue to study the variations between these versions to understand medieval Scandinavian legal history.
Swedish men enlisted in the Byzantine Varangian Guard in such numbers that the law changed to stop emigration by removing inheritance rights. A specific clause declared no one could inherit while staying in Greece because the term referred to the Byzantine Empire at the time.
A first modern printing appeared in 1827 through the work of William Robins and Carl Johan Schlyter. Their edition created the earliest known stemma for the text and made the Västgötalagen a subject of scholarly study.