Burislev, Richeza's son by Sverker I, is sometimes identified with Burislev, a rival claimant to the Swedish throne against Canute I after 1167. He acted in concert with another pretender Kol, but was defeated and eliminated, according to a much later source in 1169. He is believed either to have been slain by Canute I's men or to have fled to Denmark or Poland some time before 1173. However, medieval Swedish genealogies say that the claimants Kol and Burislev were in fact sons of John, a son of Sverker and Ulvhild. If so, the younger Burislev was given the prestigious name after his grandfather's second marriage without actually being related to Bolesław III. The only thing we know about Richeza's son Burislev is that his goods were inherited by his uterine sister Sophia of Minsk.