Riddarfjärden
Riddarfjärden (, "The Knight Firth") is the easternmost bay of Lake Mälaren in central Stockholm. Stockholm was founded in 1252 on an island in the stream where Lake Mälaren (from the west) drains into the Baltic Sea (to the east); today the island is called Stadsholmen and constitutes Stockholm's Old Town.
List of haplogroups of historic people
Birger Jarl, the founder of Stockholm, the modern capital of Sweden, belonged to Y Haplogroup I-M253, according to Andreas Carlsson at the National Board of Forensic Medicine of Sweden. Birger Magnusson was the ancestor of a line of kings of both Sweden and Norway, starting with his son, Valdemar, King of Sweden.