There appears to be no evidence that any of the three present parents for this profile are accurate: Anna Porphyrogenita Princess Olava Allogia of Norway St. Vladimir of Kiev
The reference on the profile http://our-royal-titled-noble-and-commoner-ancestors.com/p213.htm#i... cites Waldawar, Duke of Russia as her father. Is this another name for Vladimir?
What are the Sources validifying her dates?
yes, the Scandinavian Waldemar and the Russian Vladimir are definitely etymologically connected. Vladimir's great grandfather Ruril was of Scandinavian origin.
Vladimir the Great married a Byzantine princess (Anna Porphyrogenita) in 988 as part of a peace treaty between Kiev and Byzantium, and converted to (Orthodox) Christianity at the same time.
The adjective Porphyrogenita means she was born during the reign of her father as Byzantine Emperor.
For all I know, her marriage with Vladimir remained childless. As most rulers in those days, Vladimir had various illegitimate children and particularly about the daughters little is known with certainty