became pawns in marriages to gain Swedish succession after 1222, when the Sverker dynasty became extinct in male line. Catherine was married to the rival dynasty's heir Eric XI of Sweden but they remained apparently childless. Benedikte married Svantepolk of Viby and had several daughters, who married Swedish noblemen. Several Swedish noble families claim descent from Benedikte. References Literature , häfte 1, 1981 Harrison, Dick, Sveriges historia; medeltiden. Stockholm: Liber, 2002. Lönnroth, Erik, Från svensk medeltid. Stockholm: Aldus, 1959. Munch, P.A., Det norske Folks Historie, Vol. III. Christiania: Chr. Tönsbergs Forlag, 1857. Sandblom, Sven, Gestilren 1210. Striden stod i Uppland! I Gästre!. Enköping: Enköpings kommun, 2004. Sundberg, Ulf, Medeltidens svenska krig. Stockholm: Hjalmarson & Högberg, 1999. Further reading Lindström, Fredrik; Lindström, Henrik Svitjods undergång och Sveriges födelse (Albert Bonniers Förlag AB. 2006) Lagerqvist, Lars O. Sverige och dess regenter under 1.000 år (Albert Bonniers Förlag AB. 1982) External links 1160s births 1210 deaths 12th-century Swedish monarchs 13th-century Swedish monarchs Rulers of Finland Monarchs killed in action Sons of kings Swedish military personnel killed in action