She appears in The Keltiad series by American neopagan Patricia Kennealy-Morrison as the evil Marguessan, would-be usurper of the Throne of Scone and twin sister of Morgan.
Morgause |
The novel introduces Lancelot and also outlines King Arthur's victory at the Battle of Badon Hill as well as his betrayal by his halfsister Morgan la Fay, the death of Merlin and the death of Morgause by her son Agravain Guinevere takes in and raises Mordred Morgause and Arthur's son after Mordred is revealed to Guinevere as King Arthur's son.