Eiralys of Cavall is the oldest daughter of Vivienne and Wyldon of Cavall. She seems to be married and has at least two children, perhaps more. Her younger sisters are Sunarine of Cavall, Cathrea of Cavall and Margarry of Cavall. Eiralys has a brother-in-law, Owen of Jesslaw, by his marriage with Margarry.
She hasn't appeard in any of the books so far and has only been mentioned by Tamora Pierce in forums.
? │ ┌———————————————————┴—————————————————————┬——————————————————┐ │ │ │ Wyldon of Cavall ┬ Vivienne of Cavall unnamed brother Elasabenne of Cavall - unnamed husband │ ┌—————————┴———————————————————————┬——————————————————┬———————————————————┐ │ │ │ │ Eiralys of Cavall ┬ unnamed husband Sunarine of Cavall Cathrea of Cavall Margarry of Cavall - Owen of Jesslaw │ unnamed children