Sviatoslav Olgovich, prince of Rylsk

http://fmg.ac/Projects/MedLands/RUSSIA,%20Rurik.htm#OlegSviatoslavi...

OLEG Sviatoslavich (-[16/18] Jan 1180). Prince of Novgorod-Severskiy. m firstly (1150) MARIA Iurievna, daughter of IURII Vladimirovich "Dolgorukiy/Longarm" Grand Prince of Kiev & his first wife --- of the Kumans (-before 1165). m secondly (19 or 29 Jun 1165) AGAFIA Rostislavna, daughter of son of ROSTISLAV Mstislavich Grand Prince of Kiev & his wife --- (-after [16/18] Jan 1180). Oleg & his second wife had one child:

a) SVIATOSLAV Olegovich (1167-after 1186). Prince of Rilsk. m ---. The name of Sviatoslav´s wife is not known. Sviatoslav & his wife had one child:

i) MSTISLAV Sviatoslavich (-killed in battle 1241). Prince of Rilsk.

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Links

http://fmg.ac/Projects/MedLands/RUSSIA,%20Rurik.htm#OlegSviatoslavi...

https://www.slavorum.org/reconstructions-of-prince-svyatoslav-kieva...

https://wikivisually.com/wiki/Rurik_dynasty