https://alchetron.com/Gregers-Birgersson
Gregers Birgersson - Alchetron, The Free Social Encyclopedia
Feb 2, 2026 - Gregers Birgersson (died January 15, 1276) GregerGregoryGregorius was a Swedish knight, a major landowner and an illegitimate son of Birger Jarl of the House...
gregers birgerssonthe freesocialencyclopedia