Visenna was a druid, healer, and a sorceress, as well as the mother of witcher Geralt of Rivia. Geralt got the opportunity to meet her face to face as she treated some very serious injuries he had sustained.
- She appears for the first time in a short story Droga, z której się nie wraca published in 1988 in a Polish science fiction and fantasy magazine Fantastyka. The same story was in 1990 published as a part of a collection titled Wiedźmin and also later republished in other collections. At first, Droga, z której się nie wraca had not been planned as a part of the Witcher saga as this did not exist yet. Sapkowski explicitly names Visenna as Geralt's mother who left the baby at Kaer Morhen in the 1993 short story Coś więcej (Something More). According to author's own words he wanted to incorporate the original story into the Witcher universe and did not want to lose such a pretty name as Visenna.
- She also appears in the comic Droga bez powrotu.
- In The Hexer TV series, she appears in 4 of the episodes.
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