Gregers Birgersson
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Gregers Birgersson (died January 15, 1276) Greger/Gregory/Gregorius was a Swedish knight and an illegitimate son of Birger Jarl of Bjälbo, of the Folkung family. He was born out of wedlock by an unknown woman. He was the grandson of Magnus Minnesköld and Ingrid Ylva.
The proof that Birger Jarl had an illegitimate son, "Gregory" (i.e., Gregers) is in the record of his death (1276) found by the Danish 1600-century historian Otto Sperling excerpts from the transcript are also confirmed by a charter March 27, 1272, issued by the "G quondam ducis Filius".
His death was recorded on January 15, 1276 he was buried in Minoriterna, a Franciscan monastery in Uppsala. Very little remains of the monastery, apparently it has been partially excavated and several graves were found.
He was a landowner in Bathing in North Yorkshire and the Arnön in Uppland and he was married to an unknown woman who owned an estate in Södermanland.
He is regarded in history as the father of the clan called “Folkungaättens oäkta gren” (the Folkung dynasty's illegitimate branch).
Children
- Knut Gregersson
- Jon Gregersson
- Magnus Gregersson
- Karl Gregersson
- NN Gregersdotter, married Filip Ingevaldsson (Örnsparre)
- NN Gregersdatter possibly the mother of Mats Kettil Mundsson
