Svend Aggesen (or "Sven"; also known as Aggessøn, Aggesøn or Aagesen, in Latin Sveno Aggonis; born around 1140 to 1150, death unknown) was the author of Brevis historia regum Dacie, one of the first attempts to write a coherent history of Denmark covering the period 300AD-1185AD. Only the Chronicon Roskildense may precede Aggesen's efforts. Source: Wikipedia (en)