from http://fmg.ac/Projects/MedLands/POMERANIA.htm#DobroslawaM1BoleslawK...
Bogislaw I & his first wife had [four] children:
d) daughter ([1162/72]-). The Chronicon Polono-Silesiacum refers to "dux Pomeranie" as the father-in-law of one of his sons but does not specify which son (although he is named second in the list) or name the son's wife[53]. The chronology suggests that she must have been born from her father´s first marriage. m ([1187/89]) BOLESŁAW of Poland, son of MIESZKO III "Stary/the Old" Prince of Greater Poland & his second wife Ievdokia Iziaslavna of Kiev (1159-3 Sep 1195). He succeeded in 1194 as Prince of Kujavia.
Bogislaw I & his [first/second] wife had [one child]:
e) [DOBROSLAWA (-after 1220). Lady of Zlanene [Schlawe und Gützkow]. According to Europäische Stammtafeln, Dobroslawa was the same daughter of Duke Bogislaw I who married firstly Bolesław of Poland[54]. No primary source has been found which indicates that this is correct, although it is possible that the widow of Bolesław returned to Pomerania after her husband´s death and married secondly a local nobleman. However, it is not certain that Dobroslawa was the daughter of Duke Bogislaw at all. This affiliation depends on the charter dated 23 Apr 1200 under which "Boguslaus et soror mea Dobroslaua de Slauna" donated "villas…Scarnino, Cosmacevo" to the Knights of St John of Jerusalem[55]. It is not clear that "Boguslaus" in this document was Bogislaw II Duke of Pomerania, especially as this is the only charter which has so far been found which does not accord him the title "dux". Nevertheless, it is clear that Dobroslawa was a person of importance, as demonstrated by the charter dated 1220 under which "Ingardis…Pomeranorum ducissa…[et] filius meus Wartizlaus…parvulus" donated property to Kloster Grobe, for the soul of "patris sui mariti mei bone memorie domini Kazimari", witnessed by "…Domina de Zlauene"[56]. m (before [1200]) WARTISLAW von Gützkow Castellan of Stettin, son of BARTHOLOMÄUS Castellan of Gützkow [Swantiboriden] & his wife --- ([1175/80]-1233).]
