Natt Och Dag Nils Sigridsson

Gabriel Anrep, a Swedish genealogist of the 19th century, wrote: That this family stems from Sigtrygg, a rich man, who, according to Sturlesson, in the year 1030 lived in Nerike and, during the winter, housed the Norwegian King Olof Haralsson the Holy, and that Sigtrygg\'s son Ivar thereafter became a distinguished man, may be true but lacks evidence.

Nils Sigridsson (Night and Day), died at the earliest in 1299, knight, lawyer, councilor. Is the oldest known ancestor of Sweden\'s oldest family, the family Natt och Dag. Became a lawman in Tiohärad\'s law saga in 1285 or 1286 after Folke Karlsson (Lejonbalk) and his successor became Magnus Karlsson (Lejonbalk). Nils was related to Folke Karlsson (Lejonbalk).