Walburgis

      [WALBURGIS (-before 18 Apr 1172).  "Boguslaus…Pomeranorum dux" donated property to Kloster Grobe, for the soul of "coniugis nostre Walburgis", by charter dated 18 Apr 1177[26].  It is possible that Duke Bogislaw´s first wife was the sister of Wartislaw, as shown by the charter dated 1173 under which "Buguzlaus…Pomeranorum dux" granted protection to Kloster Colbaz, founded by "cognato nostro Wartizlao"[27], the term "cognatus" frequently (although not exclusively) indicating brother-in-law.  If this hypothesis is correct, Walburgis may have been her husband´s first cousin, daughter of his possible paternal uncle Swantibor.  On the other hand, the editors of the Codex Pomeraniæ Diplomaticus suggest that Walburgis was "wahrscheinlich eine dänische Prinzessin", citing Suhm´s Historie af Danmark which states that "Walborg" was the sister of Valdemar I King of Denmark but does not cite the primary source on which this statement is based[28].  m as his first wife, [her first cousin] BOGISLAW I Duke of Pomerania, son of WARTISLAW [I] & his wife --- ([1130]-18 Mar 1187).]