His father was magnate Bengt Snivil. He was the brother of Magnus Minnesköld and jarl Birger Brosa and father of jarl Ulf Fase. Charles died at the Battle of Lihula in Estonia August 8, 1220.^[3]

The seal of Charles, discovered in the early 1990s, is dated to the end of the 12th century and thus the oldest preserved personal object in Swedish history. Personal seals were normally broken to pieces at the death of the owner in order to prevent later abuse, and the intact seal of Charles is therefore unique.^[4] The Swedish Museum of National Antiquities bought it in 2001 for SEK 800,000.^[5]

• Lindström, Fredrik; Lindström, Henrik (2006). Svitjods undergång och Sveriges födelse (in Swedish). Albert Bonniers förlag. ISBN 978-91-0-010789-5.
• "Karl Döves sigill från 1100-talet" (in Swedish). Auktionsverket. 2001-10-31. Archived from the original on 2007-10-08. Retrieved 2007-08-01.
• "Karl döves sigillstamp såld för 800.000" (in Swedish). Nättidningen Rötter. 2001-11-29. Retrieved 2007-08-01.